Usage:
834B (92Z1-Up),
988B (50W6041-Up),
992C (49Z1-931),
D8L (53Y1-3484),
D9L (14Y13133),
D10 (84W1-Up)
Introduction
The 7T9995 Nitrogen Actuator has been released to replace the 5G2960 and the 5G3015 Actuators. The new actuators are shorter with a larger outside diameter than the actuators being replaced. To actuate the system, the 7T9995 Actuator has a knob to depress.
Installing this actuator in the existing fire suppression system of the above machines will require some different parts. This publication will list the parts needed for making the conversion. It will also show the method of installation.
Regardless of the model, it is important that the actuators are installed so that the locking pin may be quickly removed and the activating knob is easily accessible. See the topic entitled Mounting the 7T9995 Valve Group.
Consult the Necessary Parts section to determine the parts necessary to install the actuators on particular models. Refer to the Contents to locate the section for installing the actuators on particular models.
Do not perform any procedure outlined in this publication, or order any parts until you read and understand the information contained within.
Reference: Service Manual, Parts Book
Mounting the 7T9995 Valve Group (All Models)
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High pressure nitrogen is present. Injury to personnel is possible. Make sure the lock pin is installed in the cylinder. |
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Orientation of 7T8775 Lock pin in 7T9995 Valve Group
When mounting the 7T9995 Valve Group, locate 7T8775 Lock Pin (1) so it is easily removable. The actuator lockpin must be oriented 90° ± 10° to the axis of gage (2).
If any installation makes removing the lock pin difficult, even while wearing gloves, remove the actuator from the machine. Remove the lock pin and reorient it, as necessary, to improve the accessibility.
Reinstall the actuator on the machine, and recheck the access to the lock pin. After the actuator is satisfactorily mounted, connect the actuation line to the outlet port of the actuator.
Be sure that a 6T0005 Seal is in place to retain the lock pin when properly oriented and mounted. Spare seals are provided for use when the lockpin orientation must be changed.
Necessary Parts
Making the Installation
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Accidental discharge of the agent cylinder is possible. Injury to personnel is possible. Make sure the agent cylinder is empty or has 3T9457 Plug and 3D2824 Seal in place in the outlet agent port of the cylinder before servicing the fire suppression system. Refer to the Agent Cylinder Servicing portion of SENR3234-03 Service Manual. |
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992C
(A) Reference (Inside Cab). (B) Old configuration being removed. (C) New configuration being added. (D) Reference (Outside Cab). (E) Old configuration being removed. (F) New configuration being added.
Inside Cab Actuator
1. Disconnect the hose from the actuator. Reference location (B).
2. Remove 5G2960 Actuator Assembly (5).
3. Remove two OS1621 Bolts (1) and two 5P8245 Washers (2). Save for future use.
5. Install 6W7362 Bracket (6) with two OS1621 Bolts (10) and 5P8245 Washers (11). Reference location (C).
NOTE: Use bolts and washers saved in Step 3.
NOTE: Refer to the topic entitled Mounting the 7T9995 Valve Group (All Models).
7. Connect the hose to the actuator.
Outside Cab Actuator
1. Disconnect 7V9701 Tube assembly (21) from 2N1287 Fitting-Elbow (22). Remove elbow (22) from the actuator. Save the elbow. Reference location (D).
2. Remove and discard tube assembly (21).
3. Remove 5G2960 Actuator (5) from the side of the fuel tank. Reference location (E).
4. Remove and discard four OS0509 Bolts (14). Remove four 5M2894 Washers (15), Save three and discard one.
6. Install 6W7404 Bracket (16) with three OL1351 Bolts (17) and three 5M2894 Washers (18). Reference location (F).
NOTE: Use three washers saved in Step 4.
7. Attach 7T9995 Actuator (7) to bracket (16) with two 2B2695 Bolts (19) and two 9M1974 Washers (20).
NOTE: Refer to the topic entitled Mounting the 7T9995 Valve Group (All Models).
8. Attach elbow (22) to actuator (7).
NOTE: Elbow was saved from Step (1).
9. Install new 6W6835 Tube Assembly (21).
6V6630 Film.
10. Remove the two 6V6630 instruction films located next to the actuators.
8T3630 Film.
8T7589 Film.
11. Replace the one in the cab with an 8T7589 Film. Replace one on the fuel tank with an 8T3630 Film.
834B and 988B
Left Side View. (A) Old configuration being removed. (B) New configuration being added. (C) Side view of old configuration being removed. (D) Side view of new configuration being added. (E) Top view of new configuration being added.
Inside Cab Actuator
1. Disconnect the hose from the actuator. Reference location (A).
2. Remove 5G2960 Actuator (4).
3. Remove two OS1621 Bolts (1) and two 5P8245 Washers (2). Save the bolts and washers.
5. Install 6W7362 Bracket (11) with two OS1621 Bolts (6) and two 5P8245 Washers (7). Reference location (B).
NOTE: Use bolts and washers saved in Step 3.
6. Attach 7T9995 Actuator (10) to bracket (11) with two OS1617 Bolts (8) and two 9M1974 Washers (9).
NOTE: Refer to the topic entitled Mounting the 7T9995 Valve Group (All Models).
7. Connect the hose to the new actuator.
Outside Cab Actuator
1. Disconnect 8V8868 Tube Assembly (17) from the actuator. Reference location (C).
2. Replace tube assembly (17) with the 6W7354 Tube Assembly.
3. Remove 5G2960 Actuator (4).
4. Remove the elbow from the actuator. Save for future use.
5. Remove four OS0509 Bolts (13), four 5M2894 Washers (14), two 7V9699 Clamps (12) and 7V9700 Bracket (15). Discard the clamps and bracket.
6. Mark the center of the hole at location (F) for future reference.
7. Remove the bar at location (G).
8. Position the 7V4655 Block at location (F). Tack weld in place.
9. Position 6W7361 Bracket (20) to be sure holes line up. Reposition the block if necessary. Weld all around the 7V4655 Block with a 4 mm (0.2") fillet weld.
NOTE: Bolts (21) and washers (22) were saved in Step 5.
11. Position 8G0453 Lug (24) according to the dimensions shown. Weld all around with a 4 mm (0.2") fillet weld.
12. Secure tube assembly (17) to lug (24) with 4D8948 Clip (23), one OS0509 Bolt (21) and one 5M2894 Washer (22).
NOTE: Bolt (21) and washer (22) were saved in Step 5.
13. Attach 7T9995 Actuator (10) to bracket (20) with two 2B2695 Bolts (18) and two 9M1974 Washers (19).
NOTE: Refer to the topic entitled Mounting the 7T9995 Valve Group (All Models).
14. Install the 2N1287 Fitting-Elbow in the actuator.
NOTE: Use the elbow saved in Step 4.
15. Attach tube assembly (17) to the elbow.
6V6630 Film.
16. Remove the two 6V6630 Films located next to the actuators.
8T3630 Film.
8T7589 Film.
17. Replace the one on the fuel tank with an 8T3630 Film. Replace the one in the cab with an 8T7589 Film.
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Inside Cab Actuator
Inside Cab Installation. (A) Old configuration. (B) New configuration.
1. Remove two screws (3) and cover (4). Save for future use. Reference location (A).
2. Disconnect the hose from the actuator.
2. Remove the old actuator.
3. Remove OS0509 Bolts (1), 5M2894 Washers (2), 7G4487 Clip (6) and 7G4488 Tab (5). Discard the parts.
4. Install 6W7999 Bracket (12) with two 5M3062 Bolts (7) and two 8T4896 Washers (8). Reference location (B).
NOTE: Refer to the topic entitled Mounting the 7T9995 Valve Group (All Models).
6. Connect the hose to the new actuator.
Outside Cab Actuator
Outside Cab Installation. (D) Old configuration. (E) New configuration.
1. Disconnect hose assembly (16). Reference location (D).
2. Remove the old actuator.
3. Remove and discard washers (19) and bolts (20).
4. Remove and discard clips (17) and (18).
5. Install 6W7998 Bracket (15) with two 5P2228 Bolts (14) and two 5P1076 Washers (13). Reference location (E).
NOTE: Refer to the topic entitled Mounting the 7T9995 Valve Group (All Models).
7. Connect hose assembly (16) to the new actuator.
6V6630 Film.
8C5055 Film.
D8L, D9L, D10
D10 Inside Cab. (A) Old Configuration. (B) New Configuration. Outside Cab. (C) New configuration.
Inside Cab Actuator (D8L, D9L and D10)
NOTE: The D10 configuration is pictured above. The D8L and D9L inside cab configurations are similar.
1. Disconnect hose assembly (4). Save the connector on the actuator. Reference location (A).
2. Remove the old actuator.
3. Remove two bolts (2) and two washers (3). Remove 7G4487 and 7G4488 Clips (1). Discard the clips. Save the bolts and washers.
4. Install 9W2482 Plate (6) with two bolts (2) and two washers (3). Reference location (B).
6. Install the connector removed from the old actuator in the new 7T9995 Actuator.
NOTE: Refer to the topic entitled Mounting the 7T9995 Valve Group (All Models).
7. D8L, D9L ONLY. Install the 7K9197 Elbow on the connector.
D10 ONLY. Remove and discard hose assembly (4). Install 9W2481 Hose Assembly (5).
8. Connect the hose assembly to the new actuator.
Outside Cab Actuator (D10)
NOTE: The actuator is located at the left rear of the tractor.
1. Disconnect hose assembly (10) and remove the old actuator.
2. Remove two 0S1595 Bolts (8) and two 5P8245 Washers (9), replace the 7G4487 and 7G4488 Clips with 9W2483 and 9W2484 Clips (7). Discard the old clips. Reuse the bolts and washers.
3. Install the new 7T9995 Actuator.
NOTE: Refer to the topic entitled Mounting the 7T9995 Valve Group (All Models).
4. Connect hose assembly (10) to the new actuator.
Outside Cab Actuator (D9L)
D9L Right Hand Fender (viewed from the rear).
1. Disconnect hose assembly (7).
2. Remove the actuator.
3. Remove the bolts and washers holding the actuator mounting brackets to the mounting plate. Discard the old actuator, mounting brackets, nuts, bolts and washers.
4. Install 9W4037 Bracket (8) to the underside of fender with two 0S1621 Bolts, two 5P8245 Washers and two 1F7958 Nuts.
5. Install 8L6557 Connector in the actuator.
6. Install 7K9197 Elbow in the connector.
NOTE: Refer to the topic entitled Mounting the 7T9995 Valve Group (All Models).
8. Connect hose assembly (7) to the elbow.
Outside Cab Actuator (D8L)
1. Disconnect the hose assembly from the old actuator.
2. Remove the old actuator.
D8L Right Hand Fender (viewed from the rear).
- * It may be necessary to remove 3T1312 Bracket (13). Cut (or grind) off.
- * If necessary drill two 13.8 mm (0.543") Ø holes at two locations (D), for new plate mounting.
3. Install 9W4036 Plate to the underside of fender with two 1A2029 Bolts, two 5P1075 Washers, and two 9S8752 Nuts.
4. Install 8L6557 Connector in the actuator.
5. Install 7K9197 Elbow in the connector.
NOTE: Refer to the topic entitled Mounting the 7T9995 Valve Group (All Models).
7. Connect the hose assembly to the elbow.
D8L, D9L, and D10 (Inside Cab and Outside Cab Actuators)
6V6630 Film.
8T3630 Film.
Remove the 6V6630 Films located next to the actuators. Replace with 8T3630 Films.