Western Snowplows Midweight Series, Mechanic'S Manual

Page: 20 / 104

Lit. No. 48163, Rev. 00 March 15, 2016
20
Do not use thread sealant/tape on hoses or fittings.
These materials could damage the product.
To Install SAE O-Ring Fittings in Valve Blocks
and Rams:
1. Back off the jam nut. Hand tighten the fitting
into the port until the washer contacts the port
face, then back out to position.
2. Using two wrenches, hold the fitting body
in position and tighten the jam nut until the
washer again contacts the port face, then
tighten an additional 1/8 to 1/4 turn to lock the
fittings in place. Final torque on the jam nut
should be approximately 20 ft-lb.
To Install Hydraulic Hoses:
Using two wrenches, hold the hose in position
and tighten the flare nut 1/8 to 1/4 turn beyond
hand tight. Final torque on the flare nut should be
approximately 20 ft-lb.
HOSES AND FITTINGS INSTALLATION
HYDRAULIC SYSTEM OVERVIEW
RAM SEAL INSTALLATION
1. Lubricate the seals and O-rings with hydraulic
fluid.
2. Slide the gland nut over the split-bearing end
of the rod to prevent damaging the seals.
3. Carefully reassemble the ram.
4. Insert a 0.012" feeler gauge between the front
surface of the cylinder tube face and the hex
of the gland nut. Tighten the gland nut until it is
snug against the feeler gauge.
5. Remove the feeler gauge and tighten
the gland nut an additional 1/4 turn. This
adjustment procedure will provide a torque of
150–180 ft-lb.
Wear Ring
O-Ring
Gland Nut
Wiper Ring Seal