User's Manual

13
4. Locate one of the sliding inlet valves (13) and place
it on a fl at surface. Note that there is a concave and
convex side in the surface where the small pivot arm
stud hole is located. Refer to Figure 11.
5. Place the metal gasket (18) on the cylinder block, red
side toward the cylinder block, while aligning the
cylinder head bolt holes.
6. Install the sliding inlet valves (13) on the pivot arm stud,
concave side toward the cylinder bock. Make certain
to center the inlet valves within their openings in the
metal gasket (18).
Note: The inlet valves must not be pinched
between the metal gasket and the cylinder block.
They must be free to slide within their openings in
the metal gasket.
VALVE BODY & CYLINDER HEAD
1. Orient and carefully install the valve body assembly on
the cylinder block. The cylinder block guide pins (17)
will locate and guide the installation of the valve body.
Note: Try not to disturb the location of the
metal gasket (18) during the installation of the
valve body because the sliding inlet valves
may be pinched.
2. Orient and install the cylinder head gasket (8) on the
valve body.
3. Orient and carefully install the cylinder head on the
valve body assembly. The cylinder block guide pins
(17) will locate and guide the installation of the valve
body.
4. Insert the six 13mm x 85mm head bolts into the head
and tighten each fi nger tight.
5. Insert the two 13mm x 60mm head bolts into the head
and tighten each fi nger tight.
6. Insert a 1/4” brass dowel into one of the unloader
Before attempting to tighten the two 10mm bolts make
certain the free tip of the discharge valve (12) is not
pinched between the holder (11) and the valve body
assembly. The valve must be free to fl ex.
4. Torque the 10mm bolts to 101 to 111 inch pounds.
5. Repeat steps one through four for the other discharge
valve assembly.
UNLOADER PLUNGERS
1. Install the metal sealing washer (20) on the plug (19)
and set aside.
2. Install one o-ring (22) and backup ring (23) in the groove
of the unloader plunger (21). The backup ring (23)
should be installed in the groove so that it is closest to
the center of the plunger.
3. Install the unloader plunger return spring (24) in the
bore in the end of the unloader plunger (21).
4. Insert the assembled plunger (21) and spring (24) into
one of the unloader bores in the cylinder block. When
inserting the plunger orient it so that its guide pin hole
will be visible through the slotted opening in the cylinder
block.
5. Insert a 1/4” brass dowel into the unloader plunger bore
and depress the plunger (21) slightly. While holding
the plunger (21) depressed, insert the plunger guide
pin (16) into the slotted opening in the cylinder block
and into the unloader plunger until it is fully seated and
extends above the top surface of the cylinder block
approximately 1/8”. Slowly extract the dowel rod from
the unloader bore until spring tension is relieved and
the guide pin retains the plunger.
Note: The unloader plunger guide pin (16) is larger
in diameter and longer than the pivot arm guide
pin (17).
6. Repeat steps one through fi ve for the other unloader
plunger assembly.
INLET VALVES & PIVOT ARMS
1. Install both pivot arm guide pins (17) in the cylinder
block.
2. Place the pivot arm studs (15) in their slots in the
cylinder block. The head (large diameter) of the stud
should be in the slot with the small diameter facing
away from the cylinder block.
3. Install both pivot arms (14) over the cylinder block
guide pin (17) and unloader plunger guide pin (16) as
well as the stud (15). When installed correctly the stud
(15) and unloader plunger guide pin (16) will be in the
slotted openings of the pivot arm (14).
Note: It may be necessary to slightly depress each
unloader plunger to allow easy installation of the
pivot arms over the guide pins.
Pivot Arm Stud
Inlet Valve
Pivot Arm
Valve Body
Cylinder
Block
Concave Area
FIGURE 12 - SLIDING INLET VALVE INSTALLATION