Grove Published 01-29-2015, Control # 512-01 8-19
TMS700E SERVICE MANUAL UNDERCARRIAGE
Height Control Valves
Check valve, fittings, and air lines for leaks. Check actuating
linkage for bent or damaged condition.
Shock Absorbers
Check the shock absorbers for leakage and wear.
Removal
NOTE: The axle does not have to be removed from the
crane for maintenance.
1. Raise the crane on outriggers until the weight is off the
tires and place jack stands under the carrier frame.
2. Completely drain the air pressure from both systems.
3. Remove the tire and wheel assemblies from both sides
of the axles.
4. Place an adequate lifting/supporting device under the
axles and suspension system.
NOTE: The axle and suspension system weighs
approximately 2232 kg (4921 lb).
5. Tag and disconnect the air lines to the four brake
chambers and the four air bags. Remove the fittings
from the air bag connections. Cap all hoses and
openings.
6. Disconnect the drive shaft from the front rear axle.
7. Remove the bolts, hardened washers, and nuts (lateral
torque rod only) securing each of the torque rods to the
carrier frame.
8. Remove the hardware securing the linkage rod of each
height control valve to its respective saddle assembly.
9. Remove the nut, lockwasher, and two washers securing
each shock absorber to the carrier frame.
10. With the axles and suspension fully supported, remove
the two nuts and washers securing each of the four air
bags to the carrier frame brackets.
11. Remove the two bolts and washers securing each of the
four saddle assemblies’ cap blocks to the carrier frame
brackets.
12. Remove the axles and suspension assembly from under
the carrier.
Disassembly
Disassemble the axle and suspension assembly as
necessary using the following procedures.
1. Remove the drive line between the two rear axles.
2. Remove the bolts, hardened washers, and nuts securing
each fore and aft torque rod to the axle brackets.
Remove the torque rod(s).
3. Remove the nut securing each lateral torque rod to the
axle brackets. Remove the torque rod(s).
4. Remove each shock absorber from the suspension
saddle assembly by removing the nut and two washers
securing each. Remove the shock absorber(s).
5. Remove each axle from the walking beams by removing
the two bolts, washers, and nuts securing each end of
the axle to the walking beam end bushings. Remove the
axle(s).
6. Remove the saddle assemblies from the walking beams
by removing two bolts and washers from each pivot
block cap. Remove the caps. Remove the saddle
assemblies and the trunnion tube from the walking
beams.
7. Remove each air bag from the saddle assembly by
removing the bolt and lockwasher. Remove the air
bag(s).
Assembly
As necessary, assemble the axle and suspension assembly
using the following procedures.
1. Position the air bag(s) on the saddle assembly and
secure each with a bolt and lockwasher.
2. Position the trunnion tube through the center bushing on
each walking beam. Position each saddle assembly
over the center bushing and secure with the pivot block
cap and two bolts and washers. Torque the bolts 305 to
373 Nm (225 to 275 lb-ft).
3. Position the axle(s) under the walking beams aligning
the axle brackets with the bar end bushings on the
walking beams. Secure each end with two bolts,
washers, and nuts. Torque the bolts to 610 to 814 Nm
(450 to 600 lb-ft).
4. Position the shock absorber(s) on the saddle assembly
and secure each with a nut and two washers. Torque the
nuts to 305 to 373 Nm (225 to 275 lb-ft).
5. Position the fore and aft torque rods in the axle brackets
and secure each with two bolts, hardened washers, and
nuts. Place two additional hardened washers on each
side between torque rod and bracket. Torque the nuts to
769 to 834 Nm (567 to 615 lb-ft).
6. Position the lateral torque rods in the axle brackets and
secure each with a nut and cotter pin. Torque the nuts to
237 to 305 Nm (175 to 225 lb-ft).
7. Connect the drive shaft between the two rear axles.
Reference Only
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