Wesley shipboard - Manual (Page 2)

2
INTRODUCTION
The factory-installed oil in the Shipboard Pallet Mule is automatic transmission fluid, type dextron 2.
The hydraulic system holds approximately one pint of fluid and operates on approximately ½ pint of
fluid.
The oil level and filler plug is located on the left-hand side on the pump assembly approximately 2
inches down from the top of the pump.
To properly fill the reservoir, lower forks, remove level-filler plug, squirt fluid from squirt-type oil can
into hole until oil trickles out the bottom edge of the hole. This is the maximum amount of fluid neces-
sary to operate properly.
The wiper seals around the top of the pump piston and lift ram are fully functional wiper rings and do
not need to be replaced unless they are damaged, as both the pump piston and lift ram can be removed
directly from and reinstalled through the wiper seals without their having to be removed.
USE OF LOCTITE WHEN NECESSARY TO INSTALL:
(A) Preparation on the B1-15.5 pump piston seal involving installation in its oversize casting bore.
1. The seal and its respective casting bore must be clean and free of debris and oil.
2. To clean: Spray the casting bore surface, and the outer perimeter of the pump seal with Locquic
Primer-Cleaner grade T, and then wipe with a clean rag.
3. Next: Spray the casting bore surface, and outer perimeter of the pump seal again with Locquic
Primer-Cleaner grade T, this time allowing to dry for approximately 5 minutes.
4. Loctite Locquic Primer-Cleaner grade T causes the Loctite retaining compound to harden faster
and insures best results. MIL Spec. 22473
(B) Application of the Loctite Retaining Compound to the B1-15.5 pump seal and its respective over-
size casting bore. MIL Spec. R46082
1. Apply a coating of retaining compound to the inside perimeter of the casting bore. Also apply a
coating of retaining compound to the outside perimeter seal.
2. Insert seal in casting bore: allow 1 hour for proper hardening.
3. It is of great importance that the clearances between the mating parts be completely filled in or-
der to obtain a leak-proof seal. Make certain not to remove require material while wiping any
excess, specifically where the pump piston is involved. Loctite is a material that hardens from a
liquid state into a solid state when confined between mating parts without the presence of air.
The pump piston, lift ram and release plunger cylinders are all burnished to a #10 finish. In conjunction
with this fine finish, the Pallet Mule uses simplified packing, consisting of polyurethane O-rings and U-
cups. This packing is made of the same tough, resilient material that the wheels are coated with. The
combination of polyurethane working against this fine finish means years of trouble free hydraulic op-
eration.