Service Manual
OVERHAUL
KIT
CONTENTS
(OMCO)
ITEM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
The 105178 Overhaul Kit for OMCO control valves
contains the parts listed below. Two kits are required
service 102874, 106681
&
109679 two-spool control
QTY.
1
1
2
2
1
6
1
2
2
1
1
1
1
1
1
1
1
DESCRIPTION
O-ring, Outlet Cover
O-ring, Valve Body (Large)
O-ring, Valve Body (Small)
O-ring, Spool Valve
O-ring, Spool Valve (Special)*
Mylar Shim
Spool Cap
Screw, Spool Cap
Lockwasher, Spool Cap
Spacer Block, Spool Cap
Spring, Spool Valve
Washer, Spool Valve
Spring Retainer, Spool Valve
Shoulder Screw, Spool Valve
"S"
Link, Handle
Pin, Handle
Push Nut, Handle Pin
*Refer
to
overhaul procedure
for
application.
Except for the valve handle, supplied as Kit 105145,
no other repair parts are available. The valve must be
replaced
if
the overhaul
kit
fails to correct the problem.
PROCEDURE
(OMCO)
Service
Notes
1. Use a clean, dirt-free work surface and clean
solvent to prevent system contamination.
2.
When separating valve sections, remove each
section carefully and note the quantity and
location of mylar shims,
if
used. These will be
located around bolt holes between sections.
3. Section O-rings may be greased to hold them
in place. lubricate spool valve O-rings and
spool valve with oil when reassembling.
Disassembly
&
Reassembly
1. Remove the push nut from the valve handle
pin and remove the valve handle (or handles).
ASSEMBLING A DOUBLE VALVE
FIG.
4.
Remove Valve Handle(s)
(Double Valve
Shown)
2.
Remove the parts shown in
Fig.
5A
or 5B, as
applicable.
&
SCREWS
SHOULDER SCREW
FIG.
5A.
Spool
Cap
&
Valve Disassembly
SPACER BLOCK
DETENT
HOUSING
SPOOL CAP
&
SCREWS
SHOULDER
SCREW
FIG.
5B.
Spool
Cap
&
Valve Disassembly
-
Spool
Valve
with
Detented
Float
Position
3. Push the spool valve out toward the spool cap
end. Remove and discard the spool valve
O-rings.
(Fig.
6).
TO REMOVE O-RING INSIDE VALVE BODY
USE PAPER CLIP MADE INTO HOOK
IMPORTANT
SPOOL VALVE
&
BODY
IS
PARTS
SO
SPOOL VALVE WILL
BE
RETURNED TO ORIGINAL
BODY
A SELECT
FIT
-
IDENTIFY
FIG.
6.
Spool
Valve Removal (Double Valve Shown)
4.
If
the valve
has
a relief valve
it
should be
removed for cleaning. Remove the valve by
unscrewing the complete tension adjustment
assembly from the inlet cover. Do not tamper
with
relief valve setting; severe transmission
damage may result
if
it
is
incorrectly set.
Re-
move the spring and valve.
If
a new O-ring
is
needed for the tension adjuster, obtain P/N
9733 10.