Lull 944E-42 Service Manual - Manual (Page 159)

5.13 Model 644E-42/944E-42 Rev. 6/04
Axles, Drive Shafts, Wheels, Tires and Brakes
4. Oil leaking from axle
(differential housing and/or
axle housings).
1. Drain and/or inspection plugs
loose and/or o-rings damaged
or missing.
2. Hose fittings loose.
3. Axle shaft seal damaged or
missing and/or worn or
damaged shaft sealing
surfaces.
4. Input shaft multi-seal ring
damaged or missing and/or
worn or damaged pinion (input)
shaft sealing surfaces.
5. Axle casing to brake housing
and/or brake housing to
differential assembly o-rings
and/or seals worn or damaged.
6. Axle housing mounting nuts and
capscrews loose.
7. Differential and/or axle
housing(s) damaged.
1. Replace o-rings as needed and
tighten plugs to 96 lb-ft
(130 Nm).
2. Tighten fittings.
3. Replace seal and/or joint
coupling fork shaft (axle shaft).
4. Replace multi-seal ring and/or
input shaft. Adjust ring and
pinion alignment and bearing
preload as described in the ZF
Repair Manual.
5. Replace o-rings and seals.
6. Tighten housing nuts and
capscrews to 288 lb-ft
(390 Nm).
7. Replace housing(s) as needed.
5. Oil leaking from wheel end
housing (planet carrier).
1. Oil level plugs loose and/or
o-rings damaged or missing.
2. O-ring between hub and
housing (planet carrier)
damaged or missing.
3. Shaft seal damaged or missing
and/or worn or damaged shaft
sealing surfaces.
4. Housing capscrews loose.
5. Housing (planet carrier)
damaged.
1. Replace o-rings as needed and
tighten plugs to 96 lb-ft
(130 Nm).
2. Replace o-ring.
3. Replace seal and/or fork joint
shaft.
4. Tighten housing capscrews to
41 lb-ft (55 Nm).
5. Replace housing (planet
carrier).
6. Oil leaking from steering
cylinder.
1. Hose fittings loose.
2. Steering cylinder o-rings and/or
seals worn or damaged.
3. Piston rod seal worn or
damaged.
4. Cylinder tube damaged.
1. Tighten fittings.
2. Replace o-rings and seals.
3. Replace piston rod seal.
4. Replace cylinder tube.
5.3.8 Axle Assembly and Drive Shaft Troubleshooting (Continued)
Problem Cause Remedy