Air Conditioning and Heating R-12 All Caterpillar Machines – CAB

Tilt Cab Back

start by:

a) remove fuel tank*


*

NOTE: The cab can tilt on the D6D and D5B Tractors. The cab does not tilt on the D4E Tractor.

1. Remove battery positive (+) cable (1) from the battery and put the cable on the floor of the battery compartment.

2. Remove nut (2) and washer which fastens the battery disconnect switch to the cab mounting panel. Push the battery disconnect switch out of the mounting panel, into the battery compartment.

3. Loosen two fastener groups (3) (quick action fasteners) and move door up.

4. Remove four bolts (5), washers and lockwasher which fasten plate (4) to the dash. Remove the plate.

5. Remove two bolts (8), washers, lockwashers and strip (taped block) from bracket assembly (6) at each side of the dash. Disconnect electrical connector (7).

NOTE: Step 6 is for direct drive models only.

6. Remove clamp (9) from boot (10). Remove eight bolts (11) and washers. Remove retainer (12) and the boot from the shift lever.

NOTE: Step 7 is for power shift models only.

7. Remove knob (13) from the shift lever. Remove four screws and remove shift guide (14).

8. Remove six bolts (15), washers and lockwashers. Remove floor plate assembly (16).

NOTE: Step 9 is for direct drive models only.

9. Disconnect flywheel clutch linkage (17) from the flywheel clutch lever. Disconnect forward-reverse linkage (18) from the forward-reverse shifter lever.

10. Disconnect parking brake linkage (19) from the parking brake lever. Disconnect hydraulic control linkage (20) from the hydraulic control lever.

11. Remove five bolts (21), washers and lockwashers. Remove plate (22) from each side of the cab.

12. Install tooling (A) as shown to fasten each side of the dash to the chassis. Remove four bolts (23), washers lockwashers and nuts which fasten dash support bracket (24) to the dash.

NOTE: Ground wire (25) must be connected to the dash if the electrical system is operated with the cab tilted.

13. Remove four nuts (26), bolts and washers from each front pad assembly (27).

14. Remove two bolts (30), nuts, washers and hose clips from the lower left side hose guard. Remove two bolts (28), washers, lockwashers and remove grab bar (29) and hose guard (31).

15. Be sure safety brace assembly (32) is in position as shown.

16. Remove two bolts (33) and washers and remove upper right side hose guard (34). Remove the two bolts and washers which fasten four hose clips and two plugs (35) to the hose guard. Remove two bolts (36) and washers. Remove the grab bar and hose guard.

17. Install tooling (B) on the right side of the cab and chassis as shown.

------ WARNING! ------

Remove all loose objects from the cab before it is tilted. Be sure the cab doors are latched open or closed.

--------WARNING!------

18. Tilt the cab back with tooling (B) until the cab is in position on the safety brace.

19. Install safety clamp (37) on the safety brace as shown.

Tilt Cab Forward

1. Remove safety clamp (1) from safety bracket (2).


NOTICE

Be sure transmission shift lever on both power shift and direct drive models is in the correct position when the cab is tilted forward.


2. Tilt the cab forward with tooling (B) until the cab is in position on the frame. Remove tooling (B).

3. Install lower right side hose guard (3) and grab bar (4) with two bolts and washers. Fasten two air conditioning lines to the hose guard with two hose clips, nuts, bolts and washers. Install the upper right side hose guard and two hose clips with two bolts and lockwashers.

4. Install lower left side hose guard (6) and grab bar (5). Fasten two heater hoses to the hose guard with two hose clips, nuts, bolts and lockwashers.

5. Fasten each front pad assembly (7) to the chassis with four bolts, nut and washers.

6. Install four bolts (8), nuts and washers which fasten the dash to bracket (9) on each side of cab. Install ground wire (10) on the right side of the dash. Remove tooling (A) from each side of the dash.

7. Install plate (11) on each side of the dash with five bolts, washers and lockwashers.

8. Connect parking brake linkage (13) to lever (12). Connect hydraulic control linkages (14) to the hydraulic control lever.

NOTE: Step 9 is for direct drive models only.

9. Connect forward-reverse linkage (18) to forward-reverse shift lever (16). Connect flywheel clutch linkage (17) to flywheel clutch lever (15).

10. Install floor plate assembly (19) with six bolts, washers and lockwashers.

NOTE: Step 11 is for direct drive models only.

11. Install rubber boot (20) and retainer (21) on the shift lever. Fasten the rubber boot and retainer to the floor plate with eight bolts and washers. Fasten the boot to the shift lever with a clamp.

NOTE: Step 12 is for power shift models only.

12. Install shift guide (23) with four screws. Install knob (22) on the shift lever.

13. Fasten each side of the top of the dash to brackets (26) with two bolts, washers, lockwashers and strip (taped block). Fasten ground wire (24) to bracket (26). Make a connection of the electrical connector (25).

14. Fasten plate (27) to the top of the dash with four bolts, washers and lockwashers.

15. Move door (28) down into position and tighten two fasteners groups (29) (quick action fasteners).

16. Install battery disconnect switch (30) and plate (31) with nut and washer.

17. Connect battery positive (+) lead to battery.

end by:

a) install fuel tank*


*

Remove Cab

start by:

a) remove fuel tank*


*

1. Remove battery positive (+) cable (1) from the battery and put the cable on the floor of the battery compartment.

2. Remove nut (2) and washer which fasten the battery disconnect switch to the cab mounting panel. Push the battery disconnect switch out of the mounting panel into the battery compartment.

3. Loosen two fastener groups (3) (quick action fasteners) and move door up.

4. Remove four bolts (5), washers and lockwashers which fasten plate (4) to the dash. Remove the plate.

5. Remove two bolts (8), washers, lockwashers and strip (taped block) from bracket assembly (6) at each side of the dash. Disconnect electrical connector (7).

NOTE: Step 6 is for direct drive models only.

6. Remove clamp (9) from boot (10). Remove eight bolts (11) and washers. Remove retainer (12) and the boot from the shift lever.

NOTE: Step 7 is for power shift models only.

7. Remove knob (13) from the shift lever. Remove four screws and remove shift guide (14).

8. Remove six bolts (15), washers and lockwashers. Remove floor plate assembly (16).

NOTE: Step 9 is for direct drive models only.

9. Disconnect flywheel clutch linkage (17) from the flywheel clutch lever. Disconnect forward-reverse linkage (18) from the forward-reverse shifter lever.

10. Disconnect parking brake linkage (19) from the parking brake lever. Disconnect hydraulic control linkages (20) from the hydraulic control lever.

11. Remove five bolts (21), washers and lockwashers. Remove plate (22) from each side of the cab.

12. Install tooling (A) as shown to fasten each side of the dash to the chassis. Remove four bolts (23), washers, lockwashers and nuts which fasten dash support bracket (24) to the dash.

NOTE: Ground wire (25) must be connected to the dash if the electrical system is operated with the cab tilted.

13. Remove four nuts (26), bolts and washers from each front pad assembly (27).

14. Remove two bolts (30), nuts, washers and hose clips from the lower left side hose guard. Remove two bolts (28), washers, lockwashers and remove grab bar (29) and hose guard (31).

15. Remove two bolts (32) and washers. Remove upper right side hose guard (33). Remove the two bolts and washers which fasten four hose clips and two plugs (34) to the hose guard. Remove two bolts (35) and washers. Remove the grab bar and hose guard.

------ WARNING! ------

Always wear goggles when the air conditioning system is opened. This system is charged with Freon-12 (CCL2F2-Dichlorodifluoromethane) which is not toxic or flammable. But there is a reason for caution. When Freon-12 makes contact with a flame, lethal phosgene gas is made. INHALING FREON THROUGH A LIGHTED CIGARETTE CAN CAUSE VIOLENT ILLNESS. This system is under pressure at all times, engine running or not. HEAT MUST NEVER BE PUT ON A CHARGED SYSTEM.

--------WARNING!------

16. Disconnect two refrigerant lines (36). Install cap and plug on the refrigerant lines.

17. Disconnect two heater hoses (37).

18. Disconnect two wires (38) from the back-up alarm.

19. Fasten a hoist to cab.

20. Remove four nuts (40), bolts and washers from each rear pad assembly (39).


NOTICE

Use care to prevent damage to the power shift control lever, direct drive shift levers and flywheel clutch lever.


21. Remove the cab from the tractor. The weight of the cab is 2800 lb. (1265 kg).

Install Cab


NOTICE

Use care to prevent damage to the power shift control lever, direct drive shift levers and flywheel clutch lever.


1. Fasten a hoist to the cab and put cab in position on the tractor. The weight of the cab is 2800 lb. (1265 kg).

2. Install four nuts (2), bolts and washers which fasten each rear pad assembly (1) to the tractor.

3. Connect two wires (4) to the back-up alarm.

4. Connect two heater hoses (3).

------ WARNING! ------

Always wear goggles when the air conditioning system is opened. This system is charged with Freon-12 (CCL2F2-Dichlorodifluoromethane) which is not toxic or flammable. But there is a reason for caution. When Freon-12 makes contact with a flame, lethal phosgene gas is made. INHALING FREON THROUGH A LIGHTED CIGARETTE CAN CAUSE VIOLENT ILLNESS. This system is under pressure at all times, engine running or not. HEAT MUST NEVER BE PUT ON A CHARGED SYSTEM.

--------WARNING!------

5. Remove plugs and caps and connect two refrigerant lines (5).

6. Install lower right side hose guard (6) and grab bar (7) with two bolts and washers. Fasten two air conditioning lines to the hose guard with two hose clips, nuts, bolts and washers. Install the upper right side hose guard and two hose clips with two bolts and lockwashers.

7. Install lower left side hose guard (9) and grab bar (8). Fasten two heater hoses to the hose guard with two hose clips, nuts, bolts and lockwashers.

8. Fasten each front pad assembly (10) to the chassis with four bolts, nut and washers.

9. Install four bolts (11), nuts and washers which fasten the dash to bracket (12) on each side of cab. Install ground wire (13) on the right side of the dash. Remove tooling (A) from each side of the dash.

10. Install a plate (14) on each side of the dash with five bolts, washers and lockwashers.

11. Connect parking brake linkage (16) to lever (15). Connect hydraulic control linkages (17) to the hydraulic control lever.

NOTE: Step 12 is for direct drive models only.

12. Connect forward-reverse linkage (21) to forward-reverse shift lever (19). Connect flywheel clutch linkage (20) to flywheel clutch lever (18).

13. Install floor plate assembly (22) with six bolts, washers and lockwashers.

NOTE: Step 14 is for direct drive models only.

14. Install rubber boot (23) and retainer (24) on the shift lever. Fasten the rubber boot and retainer to the floor plate with eight bolts and washers. Fasten the boot to the shift lever with a clamp.

NOTE: Step 15 is for power shift models only.

15. Install shift guide (26) with four screws. Install knob (25) on the shift lever.

16. Fasten each side of the top of the dash to brackets (29) with two bolts, washers, lockwashers and strip (taped block). Fasten ground wire (27) to bracket (29). Make a connection of the electrical connector (28).

17. Fasten plate (30) to the top of the dash with four bolts, washers and lockwashers.

18. Move door (31) down into position and tighten two fastener groups (32) (quick action fasteners).

19. Install battery disconnect switch (33) and plate (34) with nut and washer.

20. Connect battery positive (+) lead to battery.

end by:

a) install fuel tank*


*

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