Western Snowplows Midweight Series, Руководство механика

Страница: 102 / 104

Lit. No. 48163, Rev. 00 March 15, 2016
102
TROUBLESHOOTING
1. Strike the boss plugs squarely with a hammer
to facilitate removal.
2. Remove the O-ring boss plug, spring and
poppet.
3. Reinstall the boss plug and test the snowplow.
If the problem still occurs, it is not caused
by the pilot-operated check valve. Reinstall the
poppet and spring.
If the problem does not occur, follow Steps
4 through 8.
4. Remove the O-ring boss plug, spring,
and spool with O-ring. Use long, slender
needle-nose pliers to remove the spool.
5. Inspect the springs, poppet, spool, O-rings
and poppet seat for wear, damage or
contamination. Replace worn parts.
6. The valve manifold block has a pressed-in
steel poppet seat. Use a strong pencil magnet
to push and pull on the seat. If the seat moves,
reset the poppet using the Poppet Seat
Service Tool (PN 28530). Never hammer on
the seat.
Valve Manifold
Block
Steel Seat
in Bore
O-Ring Boss Plug
O-Ring
Poppet
Back-Up Ring
Spool
Spring
Spring
O-Ring Boss Plug
PILOT-OPERATED (POPPET-STYLE) CHECK VALVE TEST AND INSPECTION
7. Re-oil the O-rings. Install the spool fully into
the bore. The spool must insert smoothly.
8. Install the poppet, springs and O-ring boss
plugs. Torque the O-ring boss plug to 60 in-lb.