{"id":9067,"date":"2026-11-13T06:09:33","date_gmt":"2026-11-13T06:09:33","guid":{"rendered":"https:\/\/usedmotorgrader.com\/blog\/?p=9067"},"modified":"2026-11-13T07:12:04","modified_gmt":"2026-11-13T07:12:04","slug":"motor-graders-traction-loss-reason-how-drivetrain-fixes-it","status":"publish","type":"post","link":"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/","title":{"rendered":"Motor Graders Traction Loss Reason &#038; How Drivetrain Fixes It"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">A grader with 255 net horsepower, like the John Deere 672G\/GP, can still sit spinning its tires in a wet cut. That sounds backwards until power and grip are separated. Engine output sets how much work the machine can attempt. The tires decide how much of it reaches the ground, and a deep cut finds that limit fast.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#Why_a_Heavy_Cut_Can_Overwhelm_Traction\" >Why a Heavy Cut Can Overwhelm Traction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#The_Difference_Between_Power_Torque_and_Usable_Traction\" >The Difference Between Power, Torque and Usable Traction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#What_Happens_Through_the_Drivetrain\" >What Happens Through the Drivetrain<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#Transmission\" >Transmission<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#Differential\" >Differential<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#Tandem_Drive\" >Tandem Drive<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#AWD_Front-Wheel_Assist\" >AWD \/ Front-Wheel Assist<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#Ground_Conditions_Can_Change_the_Entire_Equation\" >Ground Conditions Can Change the Entire Equation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#Operator_Technique_Still_Matters\" >Operator Technique Still Matters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#How_Traction_Loss_Differs_From_a_Power_or_Drivetrain_Problem\" >How Traction Loss Differs From a Power or Drivetrain Problem<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#What_This_Means_When_Buying_a_Used_Motor_Grader\" >What This Means When Buying a Used Motor Grader<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#Key_Takeaways\" >Key Takeaways<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#Final_Word\" >Final Word<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#FAQs\" >FAQs<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#1_Why_does_a_motor_grader_lose_traction_during_deep_cuts\" >1. Why does a motor grader lose traction during deep cuts?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#2_Does_a_higher-horsepower_motor_grader_always_have_better_traction\" >2. Does a higher-horsepower motor grader always have better traction?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#3_How_does_a_tandem_drive_help_a_motor_grader_maintain_traction\" >3. How does a tandem drive help a motor grader maintain traction?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/#4_Can_drivetrain_condition_affect_the_traction_of_a_used_motor_grader\" >4. Can drivetrain condition affect the traction of a used motor grader?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Why_a_Heavy_Cut_Can_Overwhelm_Traction\"><\/span><b>Why a Heavy Cut Can Overwhelm Traction<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Resistance at the moldboard climbs with every inch of depth, and depth is only one input:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material density, moisture, and compaction at the cutting edge<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Blade angle and pitch, which set how much material the moldboard engages<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Windrow buildup ahead of the blade, which adds drag as it grows<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">That resistance returns through the circle and drawbar as a demand for pulling force, and the wheels must answer it with horizontal force at the ground. Blade drag also shifts load between axles, so the driven tires do not always carry the weight they carried standing still.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-9072\" src=\"https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/where-traction-breaks-during-a-heavy-cut-1024x576.png\" alt=\"where traction breaks during a heavy cut\" width=\"840\" height=\"473\" srcset=\"https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/where-traction-breaks-during-a-heavy-cut-1024x576.png 1024w, https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/where-traction-breaks-during-a-heavy-cut-300x169.png 300w, https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/where-traction-breaks-during-a-heavy-cut-768x432.png 768w, https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/where-traction-breaks-during-a-heavy-cut-1536x864.png 1536w, https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/where-traction-breaks-during-a-heavy-cut-1200x675.png 1200w, https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/where-traction-breaks-during-a-heavy-cut.png 1672w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_Difference_Between_Power_Torque_and_Usable_Traction\"><\/span><b>The Difference Between Power, Torque and Usable Traction<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Horsepower is the rate of work. Torque is the twisting force behind it, and the transmission multiplies it into wheel torque. Usable traction is the final limit: vertical load on the driven tires times the grip of the surface. Even engine power is not one number. Cat lists the 140&#8217;s net power rising from 179 hp in first gear to 231 hp in eighth, while Deere rates the 672G\/GP at 255 hp and 963 lb-ft of peak torque.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cat&#8217;s blade pull ratings show the arithmetic. For the 160 AWD, they assume a 0.9 traction coefficient, which Cat equates with no slip: 35,344 lb at a 39,270 lb base weight. Handbook ranges for rubber tires on wet clay loam are 0.40 to 0.50, so that same weight would pull roughly 15,700 to 19,600 lb before slipping. This is simple arithmetic, not an OEM rating, but it shows why more horsepower cannot raise a grip ceiling.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Happens_Through_the_Drivetrain\"><\/span><b>What Happens Through the Drivetrain<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Power travels from the engine through the transmission, driveline, differential, and final drives into the tandem chains, wheels, and ground.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Transmission\"><\/span><b>Transmission<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Low gears trade speed for force. The Cat 160 manages 2.5 mph in first and 29.5 mph in eighth. A heavy cut in too high a gear lets the engine lug while the wheels get too little multiplication. Cat and Deere use direct-drive powershift units, while Komatsu&#8217;s GD655-7 adds a torque converter to its 8F\/4R dual-mode unit for more tractive effort. Newer is not automatically better, and<\/span><a href=\"https:\/\/usedmotorgrader.com\/blog\/best-motor-graders-that-blend-price-technology-and-performance\/\"> <span style=\"font-weight: 400;\">motor graders that balance performance and technology<\/span><\/a><span style=\"font-weight: 400;\"> are usually the ones worth comparing.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Differential\"><\/span><b>Differential<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">An open differential splits torque evenly and lets wheels turn at different speeds in turns. When one side loses grip, though, torque to the other side is capped at what the slipping wheel can hold. A lock turns the axle as one unit, so the gripping wheel keeps pulling, at the cost of resisting turns. Cat&#8217;s automatic system unlocks in turns and relocks when straight, which Cat says helps protect the power train. Deere&#8217;s disengages beyond 10 degrees of turn, while older models like the 672B used a foot-operated hydraulic lock. Cat lists automatic lock and unlock as standard on its 140 and 160, worth confirming on any CAT motor grader for sale.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tandem_Drive\"><\/span><b>Tandem Drive<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">On Cat graders, each tandem case drives both wheels on its side through roller chain and oscillates (15 degrees front up, 25 down on the 160), so four rear tires follow uneven ground and stay loaded. They need to: 30,592 lb of the Cat 140&#8217;s 42,647 lb typical weight rides on the rear axle. The mechanics of<\/span><a href=\"https:\/\/usedmotorgrader.com\/blog\/motor-grader-tandem-drive-how-power-reaches-the-wheels-and-where-wear-occurs\/\"> <span style=\"font-weight: 400;\">how motor grader tandem drives transfer power<\/span><\/a><span style=\"font-weight: 400;\"> and where they wear are covered in a companion piece.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"AWD_Front-Wheel_Assist\"><\/span><b>AWD \/ Front-Wheel Assist<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Front-wheel assist adds a third axle to the pull, spreading tractive force over more contact patches. Deere&#8217;s six-wheel drive is an automatic dual-path hydrostatic system adjustable on the fly. Cat&#8217;s 160 rates slightly more net power with AWD on (223 hp in first gear versus 213 hp), but the main change is the extra contact patch. It helps on soft shoulders, wet material, loose aggregate, and slopes. It does not end slip, since the front axle carries less weight: 13,455 lb of 45,431 lb typical on the 160. Anyone comparing a motor grader for sale with and without AWD is choosing a different traction profile.<\/span><\/p>\n<h2><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-9073\" src=\"https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/what-the-drivetrain-does-when-traction-starts-to-fail-1024x591.png\" alt=\"what the drivetrain does when traction starts to fail\" width=\"840\" height=\"485\" srcset=\"https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/what-the-drivetrain-does-when-traction-starts-to-fail-1024x591.png 1024w, https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/what-the-drivetrain-does-when-traction-starts-to-fail-300x173.png 300w, https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/what-the-drivetrain-does-when-traction-starts-to-fail-768x443.png 768w, https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/what-the-drivetrain-does-when-traction-starts-to-fail-1536x887.png 1536w, https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/what-the-drivetrain-does-when-traction-starts-to-fail-1200x693.png 1200w, https:\/\/usedmotorgrader.com\/blog\/wp-content\/uploads\/2026\/11\/what-the-drivetrain-does-when-traction-starts-to-fail.png 1672w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/h2>\n<h2><span class=\"ez-toc-section\" id=\"Ground_Conditions_Can_Change_the_Entire_Equation\"><\/span><b>Ground Conditions Can Change the Entire Equation<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Identical machines, different outcomes:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dry compacted base: strong grip, highest cutting resistance<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wet clay: moisture cuts friction while the blade still collects heavy material<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Loose gravel: the surface shears under the tire<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Saturated or soft fill: tires sink, and rolling resistance climbs<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Frozen, rutted or mixed ground: grip varies from tire to tire<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This is the territory behind<\/span><a href=\"https:\/\/usedmotorgrader.com\/blog\/adaptability-is-the-new-gold-in-the-motor-grader-industry\/\"> <span style=\"font-weight: 400;\">motor grader adaptability<\/span><\/a><span style=\"font-weight: 400;\">, and it is why a road grader for sale from a wet-climate fleet may carry a different history than one from dry base work.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Operator_Technique_Still_Matters\"><\/span><b>Operator Technique Still Matters<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Traction is shared between operator, drivetrain, and ground. Shallower passes, a lower gear, and steady ground speed keep wheel torque under the grip limit. Downshift before the tires spin, not after: Cat&#8217;s over-speed protection blocks a downshift until travel speed is safe, so a late call costs momentum. Aids such as Cat&#8217;s programmable AutoShift take over some decisions, though<\/span><a href=\"https:\/\/usedmotorgrader.com\/blog\/are-motor-grader-features-that-require-constant-adjustments-worth-it\/\"> <span style=\"font-weight: 400;\">motor grader features that require frequent adjustment<\/span><\/a><span style=\"font-weight: 400;\"> add their own attention load.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Traction_Loss_Differs_From_a_Power_or_Drivetrain_Problem\"><\/span><b>How Traction Loss Differs From a Power or Drivetrain Problem<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Traction loss has a signature:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tires turning faster than the machine travels<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Engine load rising while forward speed drops<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material piling ahead of the blade<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">One side pulling harder than the other<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A power deficiency shows as an engine dragging in every condition. Hydraulic load draws on the same engine but appears at the blade, not the tires. Slip that vanishes when the cut gets lighter points to the ground, not a failing transmission. Blade loading leaves evidence too, and<\/span><a href=\"https:\/\/usedmotorgrader.com\/blog\/motor-grader-moldboard-wear-what-uneven-blade-wear-can-tell-you-about-the-machine\/\"> <span style=\"font-weight: 400;\">uneven motor grader moldboard wear<\/span><\/a><span style=\"font-weight: 400;\"> can show how a machine was cut.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_This_Means_When_Buying_a_Used_Motor_Grader\"><\/span><b>What This Means When Buying a Used Motor Grader<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Hours do not record how a machine was worked. Any used motor grader for sale can show the same meter as another while one spent its life on dry base and the other on saturated clay. Check the parts that carry traction:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Transmission shifts under load<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tandem oil condition, noise, and chain case wear<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Differential lock and unlock response<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Uneven tire wear that points to chronic slip<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Driveline play and vibration<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Machine size matters too, as<\/span><a href=\"https:\/\/usedmotorgrader.com\/blog\/motor-grader-classes-comparison-performance-cost-and-resale-value\/\"> <span style=\"font-weight: 400;\">motor grader classes and performance differences<\/span><\/a><span style=\"font-weight: 400;\"> show. A CAT motor grader for sale with documented drivetrain work removes guesswork that hours cannot.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Traction Factor<\/b><\/td>\n<td><b>What Changes During a Heavy Cut<\/b><\/td>\n<td><b>Effect on the Grader<\/b><\/td>\n<td><b>Drivetrain \/ Operator Response<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>Cutting depth<\/b><\/td>\n<td><span style=\"font-weight: 400;\">More material engaged, windrow grows<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Pulling demand rises, speed falls<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Lighter pass or lower gear<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gear selection<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Torque multiplication versus speed<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cat 160: 2.5 mph first, 29.5 mph eighth<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Downshift before spin<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Tire-ground grip<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Force capped by load times grip<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cat rates 160 AWD pull at 0.9; wet clay loam 0.40 to 0.50<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Keep tires loaded<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Differential<\/b><\/td>\n<td><span style=\"font-weight: 400;\">One wheel can spin on low grip<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Open axle capped by weaker wheel<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Lock when straight<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Tandem drive<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Rear wheels follow uneven ground<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cat 160 oscillates 15 degrees up, 25 down<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Four tires stay in contact<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Front drive<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Front axle joins the pull<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cat 160 front axle: 13,455 of 45,431 lb<\/span><\/td>\n<td><span style=\"font-weight: 400;\">AWD adds a contact patch<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Key_Takeaways\"><\/span><b>Key Takeaways<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Heavy cutting raises resistance, and with it the force the tires must deliver.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Engine power alone does not guarantee traction; tire load and surface grip set the ceiling.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Gearing, differential lock, tandem oscillation, and extra driven wheels manage available grip and never exceed it.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Operator technique and ground conditions decide how often the limit is reached.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Drivetrain configuration and condition belong in any used-grader evaluation.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Final_Word\"><\/span><b>Final Word<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Buying is simpler when the machine, the paperwork, and the availability line up. UsedMotorGrader.com lists well-maintained used motor graders from top brands, in very good condition, with important machine documents and convenient availability. Browse a used motor grader for sale at usedmotorgrader.com and choose with the drivetrain facts in hand.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQs\"><\/span><b>FAQs<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"1_Why_does_a_motor_grader_lose_traction_during_deep_cuts\"><\/span><span style=\"font-size: 14pt;\">1. Why does a motor grader lose traction during deep cuts?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><b>A:<\/b><span style=\"font-weight: 400;\"> Deeper cuts raise blade resistance until the force required exceeds tire load multiplied by surface grip. The tires then slip with engine power still in reserve.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Does_a_higher-horsepower_motor_grader_always_have_better_traction\"><\/span><span style=\"font-size: 14pt;\">2. Does a higher-horsepower motor grader always have better traction?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><b>A:<\/b><span style=\"font-weight: 400;\"> No. Traction depends on weight over the driven tires, the surface, and the drive layout. A higher-rated road grader for sale can still spin in wet clay.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_How_does_a_tandem_drive_help_a_motor_grader_maintain_traction\"><\/span><span style=\"font-size: 14pt;\">3. How does a tandem drive help a motor grader maintain traction?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><b>A:<\/b><span style=\"font-weight: 400;\"> Oscillating tandems keep four rear tires loaded on uneven ground, and the rear axle carries most of the machine&#8217;s weight. Combined with a differential lock, the drive keeps reaching the tires that have grip.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"4_Can_drivetrain_condition_affect_the_traction_of_a_used_motor_grader\"><\/span><span style=\"font-size: 14pt;\">4. Can drivetrain condition affect the traction of a used motor grader?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><b>A:<\/b><span style=\"font-weight: 400;\"> Yes. Worn clutches, a sluggish differential lock, or tired tandems reduce how reliably torque reaches the ground. Check them on any motor grader for sale before trusting the hour meter<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A grader with 255 net horsepower, like the John Deere 672G\/GP, can still sit spinning &hellip; <a href=\"https:\/\/usedmotorgrader.com\/blog\/motor-graders-traction-loss-reason-how-drivetrain-fixes-it\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Motor Graders Traction Loss Reason &#038; How Drivetrain Fixes It&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":9068,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,4],"tags":[3138,3157],"class_list":["post-9067","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-feature","category-motor-grader","tag-maintenance-repair","tag-specs-sizing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Motor Graders Traction Loss Reason &amp; 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