BENDIX R-8 RELAY VALVE 매뉴얼 - 페이지 3

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(NOTE: The standard R-8

return spring. However, it is optionally used in some

values.)

3. Remove the sealing ring from the groove in the body.

4. Remove the relay piston and o-ring from the cover.

5. Remove the service port cap nut from the cover and

remove the cap nut o-ring from the cap nut.

6. Remove the quick release diaphragm from the service

port.

7. If the exhaust port of the quick release is protected with

a cover, remove the cover by removal of the #10-24 phillips

screw.

8. Remove the #10-24 phillips screw that secure the

exhaust diaphragm and washer to the exhaust cover.

9. Remove the four #10-24 phillips head screws that secure

the exhaust cover to the body.

10. Remove the inlet/exhaust valve insert from the body.

(NOTE: If a new inlet/exhaust value insert is to be installed,

omit step 11.)

11. Disassemble the insert by removing the retaining ring

and separating; the special washer, o-ring retainer and

o-rings, the valve spring, valve retainer and the inlet

and exhaust valve.

CLEANING AND INSPECTION

1. Wash all metal parts in mineral spirits and dry them

thoroughly.

(NOTE: When rebuilding the R-8

rubber parts should be replaced.)

2. Inspect all metal parts for deterioration and wear, as

evidenced by scratches, scoring and corrosion.

3. Inspect the exhaust valve seat on the relay piston for

nicks and scratches which could cause excessive

leakage.

4. Inspect the inlet valve seat in the body for scratches

and nicks, which could cause excessive leakage.

5. Inspect the exhaust seat of the quick release diaphragm

in the R-8

valve cover and make sure all internal air

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passages in this area are open and clean and free of

nicks and scratches.

6. Replace all parts not considered serviceable during

these inspections and all springs and rubber parts. Use

only genuine Bendix replacement parts which are

available from Bendix outlets.

ASSEMBLY

Prior to reassembling the R-8

o-rings, o-ring grooves, piston bores and metal to metal

moving surfaces with Dow Corning Silicone 55-M Pneumatic

Grease (Bendix pc. 291126).

valve does not employ a piston

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valve, all springs and all

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relay valve, lubricate all

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(NOTE: All torques specified in this manual are assembly

torques and can be expected to fall off, after

assembly. Do not retorque after initial assembly

torques fall. To convert inch pounds of torque to foot

pounds of torque, divide inch pounds by 12.

Inch Pounds

To convert foot pounds of torque to inch pounds of torque

multiply foot pounds by 12.

Foot pounds x 12 = Inch pounds

For assembly, hand wrenches are recommended.

1. Install the o-ring on the service port cap nut.

2. Place the quick release diaphragm in the R-8

cover: be certain it is positioned down between the guide

ribs in the cover. Install the service port cap nut. Torque

to approximately 150 inch pounds.

3. If the quick release exhaust port was protected with an

exhaust cover, install the cover using one of the #10-24

phillips head screws. Torque to approx. 15-25 inch

pounds.

4. Install o-ring on the relay piston and install the piston in

the cover.

(NOTE: If a new inlet/exhaust valve insert is used, omit steps

5-8.)

5. Place the inlet/exhaust valve, rubber side down, on a

clean flat surface. Install the valve retainer then the spring

on the inlet exhaust valve.

6. Install the two o-rings in their appropriate grooves in

the o-ring retainer and place the special washer over

the o-rings.

7. While holding the o-ring retainer and special washer

together, install them over the inlet and exhaust valve,

making sure the inlet valve spring is bearing on the

o-ring retainer

8. Install the retainer ring in the groove around the inlet

and exhaust valve while holding the assembly

compressed.

9. Install the inlet/exhaust valve insert in the body bore.

10. Place the exhaust cover on the body and secure it using

the four #10-24 phillips head screws. Torque the screws

to 20-30 inch pounds.

11. Place the exhaust diaphragm on the exhaust cover and

secure it using the diaphragm washer and the remaining

#10-24 phillips head screw. Torque the screw to

approximately 5-10 inch pounds.

12. Prior to assembling the cover to the body note the mark

made during disassembly to obtain the proper cover

body relationship.

=Foot Pounds

valve

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