Service manual

SELECT VALVE (S/N 512811001 & Above) W/Select
Valve (JEM) (Cont’d)
Disassembly And Assembly (Cont’d)
Remove the 4–way solenoid valve (Item 1) [A].
Remove the check valve (Item 2) [A].
Remove the pilot piston (Item 3) [A] located between the
check valves (Item 2) [A] & [B].
Remove the 2–way solenoid valves (Item 4) [A].
Inspect the solenoid valves for contamination or damage.
Wash all parts in clean solvent. Use air pressure to dry
them. Install new O–rings and back–up washers.
Remove the fitting (Item 1) [B]. Remove the check valve
(Item 2) [B].
Remove the relief valve (Item 3) [B].
Inspect the relief valve, check valves, pilot piston, and
fitting for contamination or damage. Wash all parts in
clean solvent. Use air pressure to dry them. Install new
O–rings and back–up washers.
The fitting (Item 1) [B] and fig. [C] has a poppet valve. The
poppet valve allows flow out of the select valve only.
Inspect the poppet (Item 1) [C] for smooth opening and
closing.
Assembly: Put oil on O–rings and back–up washers.
Install and tighten the solenoid valves (Items 1 & 4) [A] to
25 ft.–lbs. (33,9 Nm) torque. Install the pilot piston (Item
3) [A] in the port between the check valves (Item 2) [A]
& [B]. Install the check valves and tighten to 20 ft.–lbs.
(27,1 Nm) torque.
Install the fitting (Item 1) [B] and tighten to 20 ft.–lbs. (27
Nm) torque. Install the relief valve (Item 3) [B] and tighten
to 25 ft.–lbs. (33,9 Nm) torque.
Solenoid Testing
Use a test meter to measure coil resistance [D]. Coil wires
do not have polarity. Correct resistance for the coils is 5–8
ohms.
Replace the test meter with 12 volt power. You can see
and hear the spool shift.
A
P–09197
4
3
2
1
C
P–09195
1
D
P–09175
–2–34–
853, 853H BICS Loader
Service Manual
B
P–09196
1
3
2