BENDIX MC-11 TRACTOR ANTILOCK Manuale - Pagina 7

Sfoglia online o scarica il pdf Manuale per Ricambi per auto BENDIX MC-11 TRACTOR ANTILOCK. BENDIX MC-11 TRACTOR ANTILOCK 20. Tractor antilock

Stampa la pagina

REMOVAL OF THE MC-11

1. Prior to disassembly, remove as much contamination

as possible from the exterior of the assembly. Be sure

to keep the contamination away from the open ports.

2. Remove and identify all air lines connected to the unit.

3. Disconnect the 14-pin connector from the unit by

unscrewing its hex screw and pulling the connector away

from its socket.

4. Remove and save the mounting hardware connecting

the MC-11

assembly to the vehicle.

™

INSTALLATION OF THE MC-11

1. Replace the MC-11

™

hardware saved during removal. Connect the air lines

to the proper ports, as identified during removal. Connect

the 14-pin connector into the controller and tighten the

hex screw.

2. Perform "OPERATIONAL AND LEAKAGE TESTS"

before placing vehicle back into service.

DISASSEMBLY

The following disassembly and assembly procedure is

presented for reference purposes and presupposes that a

major rebuild of the antilock valve is being undertaken.

Several replacement parts and maintenance kits are

available which do not require full disassembly. The

instructions provided with these parts and kits should be

followed in lieu of the instructions presented here. Refer to

Figure 7 throughout the procedure.

CAUTION: The MC-11

™

in a bench vise during disassembly. However, overclamping

will result in damage, leakage, and/or malfunction. If a vise

is to be used, position the MC-11

bear on the flat area of the supply port and its opposing side

of the body.

1. Remove the EC-11

modulator by removing the controller's four mounting

bolts.

2. Lift the controller off the M-12

the wire harness from the base of the controller. To detach

the harness, depress the tab on the side of the 4-pin

connector and pull the connector from its socket in the

controller. Remove the gasket(7) from the recess in the

EC-11

controller body. NOTE: If replacement of the

™

controller only is required, proceed to Step 8 of assembly.

3. Remove the four 1/2" bolts that secure the solenoid

assembly(2) to the valve body(3). Separate the solenoid

assembly and valve body.

4. Remove sealing ring(4) from the protrusion on the bottom

of the solenoid assembly.

ASSEMBLY

™

ASSEMBLY

™

assembly on the vehicle using the

assembly may be lightly clamped

assembly so the jaws

™

controller(1) from the M-12

™

modulator and detach

™

5. Using a pair of snap ring pliers, remove retaining ring(14).

Remove the exhaust assembly(13). Remove o-ring(12)

and o-ring(11) from the I.D. and O.D., respectively, of

the exhaust assembly.

6. Remove spring(10). Remove the inlet/exhaust

assembly(8). Remove the spring seat(9) from the inlet/

exhaust assembly.

7. Using your thumb, press the piston stem and push the

piston(6) out the opposite end of the body. Remove

o-ring(5) from the piston.

8. Discard all items that have replacement parts in the

maintenance kit.

CLEANING AND INSPECTION

1. Using mineral spirits or an equivalent solvent, clean and

thoroughly dry all parts to be reused. Do not allow mineral

spirits to come into contact with the ECU connector or

solenoids.

2. Inspect the interior and exterior of all parts that will be

reused for severe corrosion, pitting and cracks.

Superficial corrosion and/or pitting on the exterior

portion of the body is acceptable.

3. Inspect the bores for deep scuffing or gouges.

4. Inspect the pipe threads in the body. Make certain they

are clean and free of thread sealant.

5. Inspect all air line fittings and plugs for corrosion. Clean

all old thread sealant from the pipe threads. Any

component exhibiting a condition described in inspection

steps 2 to 5 should be discarded and replaced before

proceeding.

ASSEMBLY

1. Using a lubricant (Bendix Pc. No. 291126) lightly coat

all o-rings and the bores of the valve body.

2. Install spring seat(9) onto the inlet/exhaust valve(8) so

that it covers the rubber seat of the inlet/exhaust valve.

™

Place the inlet/exhaust valve, large diameter first, into

the M-12

modulator's bottom bore.

™

3. Install spring(10) over the barrel of the inlet/exhaust

valve(8) so that one end of the spring rests on the spring

seat(9).

4. Install the o-rings(11 & 12) into the respective grooves of

the O.D. and I.D. of the exhaust assembly(13). Place

the large diameter of the exhaust assembly against the

spring(10) and compress the spring until the exhaust

assembly enters the bore of the body and the o-ring(11)

seals against the wall of the bore.

5. Depress the exhaust assembly into the bore until it

exposes the groove for the snap ring(14). Install snap

ring(14) into its groove. Make sure it is fully seated.