BENDIX BW1845 User Manual download pdf (Page 13)

4. Locate one of the sliding inlet valves (13) and place it on

a flat 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 instal-

lation 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 instal-

lation of the valve body.

4. Insert the six 13mm x 85mm head bolts into the head

and tighten each finger tight.

5. Insert the two 13mm x 60mm head bolts into the head

and tighten each finger tight.

6. Insert a 1/4” brass dowel into one of the unloader

plunger bore and depress the plunger (21) several

times. The plunger (21) should move freely with only

spring tension resistance noted. If greater resistance

is noted the sliding inlet valve (13) is pinched and the

cylinder head and valve body must be removed and

the sliding inlet valve (13) must be repositioned within

the opening of the meatal gasket (18). Repeat this pro-

cedure for the other unloader plunger and sliding inlet

valve.

certain the free tip of the discharge valve (12) is not

pinched between the holder (11) and the valve body as-

sembly. The valve must be free to flex.

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 cylin-

der 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 five 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 cylin-

der 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 slot-

ted 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

Cyl.

Block

Concave Area

FIGURE 12 - SLIDING INLET VALVE INSTALLATION

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 39 40

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BENDIX BW1845 User Manual Page 13

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