Manitowoc Grove TMS800E Service And Maintenance Manual page 286

UNDERCARRIAGE
15 Cotter Pin
16 Slotted Nut
17 Grease Fitting
18 Nut
19 Relay Arm
20 Suspension Air Bag
21 Torque Rod
22 Drag Link
23 Restraint Strap
24 Clevis Pin
25 Cotter Pin
26 Bolt
27 Lockwasher
28 Nut
29 Relay Arm
30 Shock Absorber
Air Bags
Check for wear or road damage. Check for air leaks. Check
tightness of nuts and bolts. Torque to 41 Nm (30 lb-ft).
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
approximately 1700 kg (3750 lb).
5. Tag and disconnect the air lines to the four brake
chambers and the four air bags. Remove the fittings
8-4
suspension system weighs
Published 01-29-2014, Control # 496-00
TMS800E SERVICE MANUAL
from the air bag connections. Cap all hoses and
openings.
6. Tag and disconnect the hydraulic lines from the steer
cylinders.
NOTE: Do not change the torque rod or vertical socket
drag links' dimensions. This will make wheel
alignment easier when the axle is reinstalled.
7. Remove the bolts, hardened washers, and nuts securing
each of the torque rods to the carrier frame.
8. Remove the cotter pin and nut securing each vertical
socket drag link to its axle.
9. Remove the cotter pin, washer and nut securing each
steer cylinder to its axle.
10. Remove the hardware securing the linkage rod of each
height control valve to its respective saddle assembly.
11. Remove the bolts and washers securing each shock
absorber to the carrier frame.
12. With the axles and suspension fully supported, remove
the nuts and washers securing each of the four air bags
to the carrier frame brackets.
13. Remove the bolts and flatwashers securing each of the
four saddle assemblies' cap blocks to the carrier frame
brackets.
14. Remove the cotter pin and clevis pin securing the
restraint strap to the frame.
15. Remove the axles and suspension assembly from under
the carrier.
Disassembly
Disassemble the axle and suspension assembly as
necessary using the following procedures.
NOTE: Do not change the torque rod dimensions. This will
make wheel alignment easier when the axle is
reinstalled.
1. Remove the bolts, hardened washers, and nuts securing
each torque rod to the axle brackets.
2. Remove each shock absorber from the suspension
saddle assembly by removing the bolt and flatwasher
securing each. Remove the shock absorber(s).
3. Remove each axle from the walking beams by removing
the two bolts, flatwashers, locknuts and shim securing
each end of the axle to the walking beam end bushings.
Remove the axle(s).