28 Model 5525-6025-6625 Parts & Specifications Manual Part # 99903688
ROTATION
1. Check items 1 through 3 for "Winch will not operate in either direction."
2. Engage rotate on/off control valve (Valve E) manual override while operating
function. If rotate operates:
a. Verify power to Valve E.
b. Check Valve E for contamination.
Machine will not rotate.
3. Check rotation counterbalance valves (Valve I, quantity 2) for contamination.
NOTES:
If a valve must be replaced, torque the new valve with the following installation torques:
1 Valves A,B,C,D, and E are installed using 4 #10-24 socket head cap screws. Torque to 50 in-lb using a criss-
cross tightening pattern.
2 Valves F, G, H, I, and J have a cartridge installation torque of 30 ft-lb.
3 The torque on the coil nut for Valve F is 15-45 in-lb.
4 The torque on the coil nut for Valve H is 6 ft-lb.
5 The torque on the coil nut for valves B, C, D, and E is 26 in-lb.
Over-torquing cartridges can cause valves to malfunction. Under-torquing cartridge can result in valves loosening
with time. Over-torquing coil nuts can permanently damage valves.
Contamination may cause failure in any hydraulic system. Avoid introducing any contamination into your hydraulic
system during the assembly procedures. Plug all ports and cavities of the manifold and cylinders while other work is
being performed during assembly.
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