Maintenance of Loader Axles
Luyu Wheel Loader
2025-05-23

Must lubricate for new loader axle before it is mounted on vehicle.When refuel oil, should separately infuse from oil inlets at bowl of the middle of axle housing and at two sides wheel-end. Oil inlet at bowl: oil 8kg, oil inlet at per wheel-end: oil 4kg.

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Technical maintenance per 50 hours

After new axle has worked with vehicle for 50 hours, should replace new lubricant. When replace it, should clean the inside of axle and then infuse the new.

Inspect whether there are premature heating phenomenon on final drive and wheel reduction. If so, inspect whether oil level meets the requirement.

Inspect loose condition of every fastener. If find to loose, refasten.

Inspect whether there is unusual sound in drive axle in the course of work. If find, should stop the vehicle to preclude.

Inspect whether leakage happens at every oil seal. If leakage happens, replace new oil seal.

Technical maintenance per month

Inspect wear condition of braking discs and whether there are destructive wear on them.

Inspect wear condition of braking plates. When the grooves on friction lining have been worn down and don’t meet the requirement, should immediately replace.

Inspect whether oil level at axle housing meets the Requirement. If oil level lowers, should refuel oil in time.

Technical maintenance per half year

lubricant in drive axle work per half year to replace once new oil.

Technical maintenance per year

should disconnect drive axle to inspect when it has worked for a year.

Inspect spiral bevel gear pair backlash, mesh and wear condition of final drive.

Inspect wear condition of differential gears and bevel gear washers.

Inspect wear condition of wheel-end gears.

Inspect wear condition of wheel-end planet gear needle rollers and bearings.

Requirement of inspection and debugging projects in the course of use

Spiral bevel gear pair backlash is 0.2~0.3mm. Mesh is >50% both face width and tooth depth. Mesh is at teeth middle. Mesh leans to little end at empty load. Backlash and mesh are adjusted by adding and reducing adjust shims at bearing seat and by adjust nuts at two sides bearings of differential.

Adjustment of bearing clearance on wheel-end hub: Turn locknut tight until hub only rotates with difficulty, then reverse locknut 1/10 turn. Here, hub can rotate freely without jammed phenomenon, obvious axial clearance and oscillatory phenomenon, turn locknut tight with screw last.

部件名称

Parts names

Phenomenon of the failure

Reasons of the failure

Preclusion measures

主减速器

及差速器

Final drive and

differential

噪声大

Loud noise

.齿轮间隙过大

Gear backlash is oversize

.滚动轴承磨损 Bearing is worn.

调整齿轮间隙

Adjust gear backlash

更换轴承 Replace bearing

壳体早期发热Housing body

early heats

润滑不良,无润滑油或润滑油过量

Lubrication is bad. No lubricant or

lubricant is excessive

加油至油位

Lubricate to oil level.

周期性异响Periodic

unusual sound

.齿轮出现打齿

Gear appears tooth breakage.

.内有异物

There is eyewinker inside.

.紧固件松动

Fasteners loose.

更换齿轮

Replace gear.

放油检查

Bleed the oil port to inspect.

拧紧紧固件

Turn fasteners tight.

差速器失灵Differential failure

十字轴折断

Cross pin breakage.

更换十字轴

Replace cross pin.

漏油

Leakage

.油封老化磨损

Oil seal ages and wears.

.密封胶失效

Sealant loses its efficiency.

.紧固件松动

Fasteners loose

更换油封

Replace oil seal.

刮去旧胶,重新涂抹

Scrape off old sealant and

smear afresh

拧紧紧固件

Turn fasteners tight.

轮边

减速器Wheel-end reductions

轮边不转动Wheel-end

doesn’t rotate

.半轴扭断  

Axle shaft breakage.

.差速系统失灵

Differential system failure.

更换半轴 Replace axle shaft.

调整和更换差速系统

Adjust and replace differential system.

有异响  

There is

unusual sound

.齿轮打齿

Gear appears tooth breakage

.有异物

There are foreign bodies

更换齿轮

Replace gear.

放油检查

Bleed the oil port to inspect.

壳体早期发热Housing body

early heats.

润滑不良,无润滑油或润滑油过量

Lubrication is bad.

No lubricant or lubricant is excessive.

加润滑油至油位

Lubricate to oil level.

制动器

Brake

制动不灵

Braking failure

.油路开路或堵塞

Oil line disconnects or is clogged

.活塞O形密封圈老化磨损

Piston O-ring ages and wears.

.活塞与活塞缸抱死

Piston and piston cylinder jam.

.液力压强不足

Hydraulic pressure isn’t enough.

接通或更换油管

Connect or replace oil line.

更换O型密封圈

Replace O-ring.

更换制动钳

Replace brake.

检查油泵、排除管路中气体Inspect oil pump and exhaust gas in oil line.

摩擦片不回位

Friction lining doesn’t release.

.活塞密封圈老化磨损

Piston seal ring ages and wears.

.进油嘴松动

Oil inlet joint looses

.钳体铸造缺陷

There is casting defect on brake body

更换密封圈

Replace seal ring.

拧紧进油嘴

Turn oil inlet joint tight.

更换制动钳体或修补Replace brake body and repair.


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