Usage:
CB-634 (5CL122-Up) Vibratory Compactors
Reference: Operation & Maintenance Manual, KEBU6752, for CB-634 Vibratory Compactor, Page 48, Operation Section, Towing information.
Description of Change: A brake release pump is now available for CB-634 Vibratory Compactors. The new brake release pump contains a needle valve and a hand pump that are used to hydraulically release the brakes when the machine must be towed.
Adaptable To: The new 119-5762 Brake Pump Group is effective with CB-634B (5CL122-Up). The new pump is adaptable to first production when installed according to the procedure that follows. The chart lists all of the parts needed to install the new pump.
Procedure To Install Brake Release Pump
1. Drain oil from the hydraulic tank. Use a suitable container or procedure to prevent contamination to the environment.
2. Remove the air inlet filter housing.
Illustration 1. Front View of Rear Frame, Left Side (C) 31.3 mm (1.23 in). (D) 140.7 mm (5.54 in). (E) 196 mm (7.7 in). (F) 69.1 mm (2.72 in). (G) Dia 5.2 mm, M6 X 1-6H thread, two locations.
3. Drill and tap two mounting holes for installing hand pump group (4), as shown in Illustration 1.
Illustration 2. Hand Pump Group Installation (2) 6V-8641 Connector. (3) 3J-1907 O-ring. (4) 115-8488 Hand Pump Group. (5) 086-9035 Tee. (6) 8T-4205 Washer. (7) 7X-7888 Bolt.
4. Assemble fittings to hand pump group (4) and install it to the machine as shown in Illustration 2.
Illustration 3. Before Hand Pump Group Installation. (H) Tee. (J) Line. (K) Fitting. (L) Line.
5. Disconnect line (L) and remove and discard fitting (K). Disconnect line (J) from tee (H).
Illustration 4. After Hand Pump Group Installation. (L) Line. (J) Line. (3) 3J-1907 O-ring. (8) 6V-8781 Tee. (9) 6V-8397 O-ring. (10) 3K-0360 O-ring. (11) 5P-6944 Adapter.
6. Install adapter (11), using O-ring (10), to the open port where fitting (K) was removed.
7. Install tee (8) to adapter (11) using one O-ring (3).
8. Install line (J) to tee (8) using O-ring (9).
9. Install line (L) to tee (8) using one O-ring (9).
Illustration 5. After Hand Pump Installation. (H) Tee. (1) 4J-5477 O-ring. (2) Connector. (9) 6V-8397 O-ring Seal. (12) 119-5994 Hose Assembly.
10. Install hose assembly (12) to the open port on tee (H) using one O-ring (9). Connect hose (12) to connector (2) on the hand pump group, using O-ring (1).
Illustration 6. Front View Of Brake Valve Area (M) Tee. (N) Line. (P) Line.
Illustration 7. Front View Of Rear Frame (N) Line. (Q) Port.
11. Disconnect line (N) from tee (M) and port (Q). Remove and discard line (N).
12. Disconnect line (P) from tee (M).
13. Remove and discard tee (M).
Illustration 8. Front View Of Brake Valve Area (R) Port. (S) Port. (3) 3J-1907 O-ring. (5) 086-9035 Tee. (9) 6V-8397 O-ring. (13) 115-3075 Needle Valve. (14) 8T-0788 Elbow.
14. Install elbow (14) using O-ring (9).
15. Install needle valve (13) using O-ring (3).
16. Install tee (5) using O-ring (3).
17. Connect line (P) to port (R) of tee (5) using O-ring (3).
Illustration 9. Front View Of Rear Frame (Q) Port. (15) 119-5995 Hose Assembly. (17) 5P-9299 Clip.(18) 8T-4908 Bolt.(19) 5P-4116 Washer.(20) 6V-9189 Locknut.
Illustration 10. Front View Of Brake Pump Group (T) Port. (U) Port.
18. Connect one end of hose (15) to port (Q) using O-ring (9). Connect the other end of hose (15) to port (T) on the brake pump using O-ring (1). Secure hose (15) using the clamps which were used to secure hose (N).
19. Add one clip (17) using bolt (18), washer (19), and locknut (20).
20. Connect hose (16) to port (U) on the brake pump using O-ring (9). Connect the other end of hose (16) to port (S) on tee (5), installed on needle valve (13). Use O-ring (9) when connecting hose (16) to port (S).
Illustration 11. Front View Of Brake Valve Area (After Hand Pump Installation) (W) Existing clamp. (16)113-8518 Hose Assembly. (21) 7R-7964 Safety Plate. (22) 6W-0210 Bolt. (23) 086-9286 Clamp.
21. Secure hose (16) by adding two clamps (23), one plate (21), and one bolt (22), to existing clamp (W).
22. Fill the hydraulic tank.
23. Install the air cleaner.
24. Check for leaks and verify correct system operation.
Brake Release Pump Operation
Illustration 12. View Inside Left Compartment (A) Needle valve.(B) Plunger.
Normal Operation
During normal machine operation, needle valve (A) must be in the fully open (counterclockwise) position.
Towing
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Personal injury or death could result when towing a disabled machine incorrectly. Block the machine to prevent movement before releasing the brakes. The machine can roll free if it is not blocked.
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NOTE: Follow the recommendations below to properly perform the towing procedure.
Follow the towing instruction in the Operation and Maintenance Manual. When the instructions indicate to "manually release the parking brake," perform the following steps.
1. Loosen the setscrew and turn the knob on needle valve (A) fully clockwise to close the valve.
2. Move plunger (B) in and out until it is no longer possible to move the plunger by hand.
3. To re-apply the parking brake, turn the knob on needle valve (A) fully counterclockwise to open the valve.
4. Tighten the setscrew.