BENDIX VM-1 Руководство - Страница 4

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PRIMARY

RESERVOIR

SECONDARY

RESERVOIR

FIGURE 5 TP-4

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TRACTOR PROTECTION VALVE (SERVICE APPLICATION)

10. Disconnect line from secondary circuit delivery (SCD)

port and plug end of line. Make a foot brake valve

application and check secondary circuit delivery (SCD)

port of valve for leakage. Leakage at port indicates

double check valve requires servicing. Remove plug

from line and reconnect to valve.

11. Make a foot valve application and test for gasket

leakage. Tighten bolts if necessary. (See #4 "Assembly"

for Proper Torque Sequence.)

If the TP-4

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tractor protection valve does not function as

described above or leakage is excessive, it is recommended

that it be replaced with a new or remanufactured unit, or

repaired with genuine Bendix parts available at authorized

Bendix parts outlets, in which case the following should

prove helpful.

DISASSEMBLY

1. Remove six (6) cap screws (11) Figure 2 and

lockwashers. This will permit separation of the body,

intermediate body and lower body and gaskets. (9) &

(10)

2. Remove piston (12) and piston spring (8) from

intermediate body. Remove o-rings (2) and (3) from

piston (12).

3. Remove both double check valve shuttles (4) and

guides from body.

TRAILER CONTROL VALVE

TWO WAY VALVE

TO LIMITING AND

Q.R. VALVE

DUAL

BRAKE

VALVE

STOP LIGHT SWITCH

4. Remove large retaining ring (13) from lower body.

Remove valve retainer (14), spring (7) and inlet valve

(6). Remove o-ring (5) from valve retainer.

(NOTE: Older revision valves may have an o-ring (1),

sealing disc (16) and small retaining ring (15) as

shown in Figure 3. These need not be disturbed

unless leakage was noted, in which case the

retaining ring must be removed and the o-ring

replaced.)

CLEANING AND INSPECTION

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

completely.

2. Inspect all parts for excessive wear or deterioration.

Inspect valve seats for nicks or burrs. Check the valve

spring for cracks or corrosion.

3. Inspect the bores of the valve housing for deep scufﬁ ng

or gouges.

Replace all parts that were discarded and any parts not

found to be serviceable during inspection, using only

genuine Bendix replacement parts.

ASSEMBLY

Before assembling the TP-4

o-ring grooves, body bores and rubbing surfaces with

Bendix silicone lubricant (Pc. No. 291126) or equivalent.

TRAILER SUPPLY VALVE

TO TRAILER

EMERGENCY

VENT

TRAILER

EMERGENCY

STOP LIGHT SWITCH

TO TRAILER SERVICE

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valve, lubricate all o-rings,