Manitowoc Grove TMS800E Service And Maintenance Manual page 288

UNDERCARRIAGE
4. Remove the saddle assemblies from the walking beams
by removing bolts and flatwashers from each pivot block
cap. Remove the caps. Remove the saddle assemblies
and the trunnion tube from the walking beams.
5. Remove each air bag from the saddle assembly by
removing the locknut and flatwasher. 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 locknut and flatwasher.
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 bolts and flatwashers. Torque the bolts to 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 the bolts,
flatwashers, locknuts and shim. 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 bolt and flatwasher. Torque the
nuts to 610 Nm (450 lb-ft).
5. Position the torque rods in the axle brackets and secure
each with two bolts, hardened washers, and nuts.
Torque bolts to 293 to 317 Nm (216 to 234 lb-ft).
Installation
1. Position the axle and suspension assembly under the
carrier.
2. Raise the assembly into position under the carrier
aligning the saddle assemblies pivot blocks and air bags
with the mounting brackets on the carrier.
3. Install the four saddle assemblies cap blocks and secure
each with the bolts and flatwashers. Center the walking
beam in saddle before tightening end caps. Torque the
bolts to 305 to 373 Nm (225 to 275 lb-ft).
4. Secure the four air bags to the carrier brackets with the
nuts and washers. Torque the nuts to 41 Nm (30 lb-ft).
5. Secure each shock absorber to the carrier frame with a
bolt and flatwasher. Torque bolts to 610 Nm (450 lb-ft).
6. Secure the linkage rod of each height control valve to its
respective saddle
hardware.
7. Attach each steer cylinder ball socket to its axle using
the slotted nut, washer and cotter pin. Torque each nut
8-6
assembly with the attaching
Published 01-29-2014, Control # 496-00
TMS800E SERVICE MANUAL
to 136 to 170 Nm (100 to 125 lb-ft). Tighten to nearest
cotter pin hole and insert cotter pin.
8. Attach the vertical socket drag links to their axles using
the slotted nuts and cotter pins. Torque each nut to 136
to 170 Nm (100 to 125 lb-ft). Tighten to nearest cotter pin
hole and insert cotter pin.
9. Connect the hydraulic lines to the steer cylinders as
tagged during removal.
10. Attach the four torque rods to the carrier frame using two
bolts, hardened washers, and nuts each. Torque the
bolts to 293 to 317 Nm (216 to 234 lb-ft).
11. Install the air fittings in the inlet of the air bags. Connect
the air lines to the air bags and brake chambers as
tagged during removal.
NOTE: The front rear axle will need to be elevated to
attach restraining strap.
12. Secure the restraint strap to the frame and secure with
the cotter pin and clevis pin.
13. Service the axles and suspension system. Refer to
Lubrication, page 9-1.
14. Build up air pressure in the systems and check for leaks.
Check operation of brakes and air suspension system.
15. Install the tire and wheel assemblies. Refer to Wheels
and Tires, page 8-19 in this Section.
16. Retract the outriggers and check the axles for proper
operation.
Axle Alignment Procedure
1. Place wood blocks between the saddle assemblies and
the frame so that the top surfaces of the saddle
assemblies are parallel to the bottom of the carrier
frame.
2. Measure the longitudinal distance from the center of the
rear axle saddle blocks to the center of the king pin on
the last front axle (Figure 8-2). If necessary, adjust the
shims in the walking beam ends. The correct side to side
location is achieved by adding or removing shims at the
lateral rods.
3. Measure diagonally from the center of the rear axle
saddle blocks to the center of the opposite king pin on
last front axle (Figure 8-2).
measurements are not within 12.7 mm (0.50 in), check
the location of the suspension hangers and air bag
hangers and adjust as necessary.
4. Double check all measurements made in steps 1
through 3 and readjust the shims if necessary.
5. Repeat steps 2 through 4 to align the first front axle. Use
the king pin centers of the last front axle for making the
necessary longitudinal
If the diagonal
and diagonal king pin