SERVICE REPAIR
H135FT H155FT [J006]
1600 SRM 1133
General
General
This section has the description and repair proce-
dures for the steering axle.
The steering axle assembly includes an axle
frame, steering cylinder, and two spindle and
hub assemblies. See Figure 1. The steering axle is
articulated and is connected to the frame by center
pivot mounts. The center pivot mounts permit the
steering axle to move in the frame mount when the
lift truck travels over rough surfaces.
A. CUSHION TRUCKS ONLY
B. PNEUMATIC TRUCKS ONLY
1. AXLE FRAME
2. MOUNT
3. BRACKET
4. STEERING CYLINDER
5. TIE ROD
6. SPINDLE
7. MOUNT
8. HUB ASSEMBLIES
Figure 1. Steering Axle
1
Steering Axle Assembly Repair
1600 SRM 1133
The end caps of the steering cylinder are also the
mounts for the cylinder and are held to the shell by
the mount capscrews. There are O-rings, seals, and
wipers in the end caps to seal the caps to the shell
and rod. The ends of the piston rod extend from both
ends of the cylinder. A single piston and the seal are
at the center of the rod. Oil pressure on one side of
the piston moves the piston in the bore. The piston
pushes an equal amount of oil from the opposite side
of the cylinder.
When the piston reaches the end of the stroke, a re-
lief valve in the steering circuit controls the oil pres-
sure. The tie rods that connect the spindle arms to
the cylinder are not adjustable.
Each spindle turns on two tapered roller bearings in
mounts in the axle frame. The preload on the bear-
ings is controlled by shims at the lower bearing cap.
The wheels rotate on two tapered roller bearings and
are held on the spindles by a castle nut. The bearing
preload of the wheels is adjusted by the castle nut.
The grease seals protect the bearings from dirt and
water. Wear sleeves protect the hub from wear by the
seals.
Steering Axle Assembly Repair
REMOVE
WARNING
PUTTING THE LIFT TRUCK ON BLOCKS
The lift truck must be put on blocks for some
types of maintenance an