JLG G12-55A Service Manual - Manual (Page 86)

Axles, Drive Shafts, Wheels and Tires
5-6 G10-55A, G12-55A
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.
1. Replace o-rings as needed and tighten
plugs to 96 lb-ft (130 Nm).
2. Hose fittings loose. 2. Tighten fittings.
3. Axle shaft seal damaged or missing
and/or worn or damaged shaft
sealing surfaces.
3. Replace seal and/or joint coupling fork
shaft (axle shaft).
4. Input shaft multi-seal ring damaged
or missing and/or worn or damaged
pinion (input) shaft sealing surfaces.
4. Replace multi-seal ring and/or input
shaft. Adjust ring and pinion alignment
and bearing preload as described in the
Engine Repair Manual.
5. Axle casing to brake housing and/or
brake housing to differential
assembly o-rings and/or seals worn
or damaged.
5. Replace o-rings and seals.
6. Axle housing mounting nuts and
capscrews loose.
6. Tighten housing nuts and capscrews to
288 lb-ft (390 Nm).
7. Differential and/or axle
housing(s) damaged.
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.
1. Replace o-rings as needed and tighten
plugs to 96 lb-ft (130 Nm).
2. O-ring between hub and housing
(planet carrier) damaged or missing.
2. Replace o-ring.
3. Shaft seal damaged or missing
and/or worn or damaged shaft
sealing surfaces.
3. Replace seal and/or fork joint shaft.
4. Housing capscrews loose. 4. Tighten housing capscrews to
41 lb-ft (55 Nm).
5. Housing (planet carrier) damaged. 5. Replace housing (planet carrier).
6. Oil leaking from
steering cylinder.
1. Hose fittings loose. 1. Tighten fittings.
2. Steering cylinder o-rings and/or
seals worn or damaged.
2. Replace o-rings and seals.
3. Piston rod seal worn or damaged. 3. Replace piston rod seal.
4. Cylinder tube damaged. 4. Replace cylinder tube.
Problem Cause Remedy