Hoist Cylinder Lower Mount - Komatsu 930E-2 Shop Manual

Installation
Install a retaining strap or chain to prevent the
cylinder from extending during handling. The hoist
cylinder weighs approximately 2500 lbs. (1135 kg).
Use a suitable lifting device that can handle the
load safely.
1. Raise the cylinder into position over the pivot
point on the frame. The cylinder should be posi-
tioned with the air bleed vent plug on top, toward
the front of the truck. Install spacer (6, Figure
8-19). Align bearing eye with pivot point and push
cylinder into place.
2. Install retaining plate (3), locking plate (2),and
capscrews. Tighten capscrews to 220 ft. lbs.
(298 N.m) torque. Bend locking plate tabs over
capscrew flats.
3. Align the top hoist cylinder bearing eye with the
bore of the upper mounting bracket. Refer to
Figure 8-18.
4. Align retaining capscrew hole in pin with hole in
mounting bracket and install pin. Install cap-
screw (5) and self-locking nut (4) and tighten to
standard torque.
5. Install new O-rings in grooves on hose flange
connections and lubricate with clean hydraulic
oil. Position flanges over hoist cylinder ports and
install flange clamps. Secure clamps with cap-
screws and lockwashers. Tighten capscrews to
standard torque.
6. Reconnect lubrication lines for the upper and
lower hoist cylinder bearings.
L08024
7. Start engine, raise and lower body several times
to bleed air from cylinder. Check for proper op-
eration and inspect for leaks.
8. Service hydraulic tank if necessary.
FIGURE 8-19. HOIST CYLINDER LOWER MOUNT
1. Capscrew
2. Lock Plate
3. Retainer
Hoist Circuit Component Repair
4. Retainer Ring
5. Bearing
6. Spacer
L8-13