8F4994 SEAL-O-RING Caterpillar parts
3192, 3208, 3408, 3408B, 3408C, 3412, 3412C, 3412E, 3508, 3512, 594, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 69D, 769C, 769D, 771C, 771D, 773B, 773D, 773E, 775B, 775D, 775E, 785, 955C, 977D, C-10...
Rating:
Alternative (cross code) number:
CA8F4994
8F-4994
8F4994
CA8F4994
8F-4994
8F4994
Weight: 0.01 pounds 0 kg.
Information:
CROSS SECTION DIAMETER
5.33
mm
DASH SIZE
317
ID
23.16
mm
MATERIAL
Nitrile (NBR) Rubber - 75 Duro
OD
0
mm
ARTICULATED TRUCK, WHEEL TRACTOR,
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$8.07
27 Dec 2021
US: Florida-Parts-Z
1M6772 - Seal 8F4994 fits Caterpillar (CAT)
FIRST PRICE PARTS
FIRST PRICE PARTS
$11.73
27 Dec 2021
US: Florida-Parts-Z
8F4994 - Seal O Ring 1M6772 fits Caterpillar (CAT)
FIRST PRICE PARTS
FIRST PRICE PARTS
$2.09
02 Jan 2019
Parts Express: Parts Express
CT8F4994 : O-RING FOR CATERPILLAR
CATERPILLAR || All Brand new & rebuilt items comes with 1 year warranty. || O-RING FOR CATERPILLAR FORKLIFT. CATEGORY : FORKLIFT PARTS - CATERPILLER/TOWMOTOR. THIS ITEM CAN ALSO BE FOUND UNDER THE FOLLOWING PART NUMBERS: 8F4994, CT 8F4994, CATERPILLAR/TOWMOTOR8F4994, CATERPILLAR/TOWMOTOR 8F4994, 8F4994
CATERPILLAR || All Brand new & rebuilt items comes with 1 year warranty. || O-RING FOR CATERPILLAR FORKLIFT. CATEGORY : FORKLIFT PARTS - CATERPILLER/TOWMOTOR. THIS ITEM CAN ALSO BE FOUND UNDER THE FOLLOWING PART NUMBERS: 8F4994, CT 8F4994, CATERPILLAR/TOWMOTOR8F4994, CATERPILLAR/TOWMOTOR 8F4994, 8F4994
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2023-12-28
2021-11-02
2020-05-09
2019-04-21
2019-01-16
2019-01-16
2019-01-16
Number on catalog scheme:
21
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Compatible equipment models: 8F4994:
Information:
This starting system uses an electric solenoid to position an air valve in order to activate the air starting motor. If the starting motor does not function, do the procedure that follows:
Check the indicator reading for the air pressure.
If the reading is not acceptable then use a remote source to charge the system.
If the reading is acceptable then open the main tank drain valve for a moment. Verify the pressure that is shown on the pressure indicator. Listen for the sound of the high pressure from the discharge. Electrical Side Of The System
Turn the control switch to "MANUAL START" position. Listen for the sound of the engagement of the air starter motor pinion with the flywheel gear.
If the sound of the engagement can be heard, the problem is with the Air Side Of The System. Proceed to the Air Side Of The System.
If no sound of the engagement can be heard, the problem could be with the Electrical Side Of The System.
Illustration 1 g00286936
Control Valve
Typical Example
(1) Control valve. (2) Connector.
Check the electrical system by disconnecting the leads from the control valve (1) at connector (2). Set the multimeter in the "DCV" range. Measure voltage across the disconnected leads that connect to the starting switch.
A voltage reading shows that the problem is in the control valve (2) or the air starting motor. Go to Step 2 of Air Side Of The System.
A "ZERO" reading shows that the problem is in the control switch or the problem is in the wires for the control switch.
Fasten the multimeter lead to the start switch at the terminal for the wire from the battery. Fasten the other lead to a good ground.
A "ZERO" reading indicates a broken circuit from the battery. With this condition, check the circuit breaker and wiring.
The problem is in the control switch if either a voltage reading is found at the control switch or if a voltage reading is found in the wires from the control switch to the control valve. Air Side Of The System
Illustration 2 g00286937
Air Starting System
Typical Example
(1) Control valve. (2) Connector. (3) Connection. (4) Air hose. (5) Relay valve.
Activate the control switch. If the engagement of the air starter motor pinion with the flywheel ring gear can be heard then remove the small air hose (4) from the top of the relay valve (5).
Full air pressure comes from the end of the air hose (4) when the control switch is activated. The relay valve (5) is faulty or the air starting motor is damaged.
If no air pressure comes from the end of the air hose (4), then the problem is in the pinion nose housing for the air starting motor.
The sound of the air starter motor pinion is not heard when the control switch is activated. Voltage was measured at the control valve. Remove the other small air hose from the connection (3).
If no air comes from the end of the removed air hose, the control valve (1) is faulty.
If the air comes from the end of
Check the indicator reading for the air pressure.
If the reading is not acceptable then use a remote source to charge the system.
If the reading is acceptable then open the main tank drain valve for a moment. Verify the pressure that is shown on the pressure indicator. Listen for the sound of the high pressure from the discharge. Electrical Side Of The System
Turn the control switch to "MANUAL START" position. Listen for the sound of the engagement of the air starter motor pinion with the flywheel gear.
If the sound of the engagement can be heard, the problem is with the Air Side Of The System. Proceed to the Air Side Of The System.
If no sound of the engagement can be heard, the problem could be with the Electrical Side Of The System.
Illustration 1 g00286936
Control Valve
Typical Example
(1) Control valve. (2) Connector.
Check the electrical system by disconnecting the leads from the control valve (1) at connector (2). Set the multimeter in the "DCV" range. Measure voltage across the disconnected leads that connect to the starting switch.
A voltage reading shows that the problem is in the control valve (2) or the air starting motor. Go to Step 2 of Air Side Of The System.
A "ZERO" reading shows that the problem is in the control switch or the problem is in the wires for the control switch.
Fasten the multimeter lead to the start switch at the terminal for the wire from the battery. Fasten the other lead to a good ground.
A "ZERO" reading indicates a broken circuit from the battery. With this condition, check the circuit breaker and wiring.
The problem is in the control switch if either a voltage reading is found at the control switch or if a voltage reading is found in the wires from the control switch to the control valve. Air Side Of The System
Illustration 2 g00286937
Air Starting System
Typical Example
(1) Control valve. (2) Connector. (3) Connection. (4) Air hose. (5) Relay valve.
Activate the control switch. If the engagement of the air starter motor pinion with the flywheel ring gear can be heard then remove the small air hose (4) from the top of the relay valve (5).
Full air pressure comes from the end of the air hose (4) when the control switch is activated. The relay valve (5) is faulty or the air starting motor is damaged.
If no air pressure comes from the end of the air hose (4), then the problem is in the pinion nose housing for the air starting motor.
The sound of the air starter motor pinion is not heard when the control switch is activated. Voltage was measured at the control valve. Remove the other small air hose from the connection (3).
If no air comes from the end of the removed air hose, the control valve (1) is faulty.
If the air comes from the end of
Cat SIS web machinery list:
Parts seal Caterpillar catalog:
D10N, D10R
D10R, D10T, D10T2, D9R, D9T
D8R, D8R II, D9R
D10R, D10T
D10N, D10R, D11R
D9R, D9T
12E, D8H, D8K
D7G, D8H, D8K
D9H
10, 10S, D10, D11N
D9E
D8H
16G, 16H NA, 245, 24H, 3406, 3406B, 3406C, 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412E, 578, 583R, 587R, 621, 621B, 621E, 621F, 623B, 623E, 623F, 627B, 627E, 627F, 631D, 631G, 637G, 651E, 657E, 769C...
120M, 120M 2, 12M, 12M 2, 12M 3, 12M 3 AWD, 140M, 140M 2, 140M 3, 140M 3 AWD, 160M, 160M 2, 160M 3, 160M 3 AWD, 235B, 24H, 24M, 3176C, 3196, 3406E, 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412D, 3412E...
3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412D, 3412E, 631D, 69D, 769C, 769D, 771C, 771D, 773B, 773D, 773E, 775B, 775D, 775E, 793F, 793F AC, 793F CMD, 793F OEM, 793F-XQ, 795F AC, 795F XQ, 797, 797B, 79...
3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412D, 3412E, 631D, 69D, 769C, 769D, 771C, 771D, 773B, 773D, 773E, 773G, 773G OEM, 775B, 775D, 775E, 775G, 775G OEM, 777G, 834B, 836, 844, 844K, 854K, 988B, 990...
24H, 3406B, 3406C, 3406E, 3408E, 3412, 3412C, 3412E, 3456, 374F L, 390F L, 5110B, 589, 621B, 631E, 637E, 651E, 657E, 69D, 735B, 740B, 769C, 769D, 770G, 770G OEM, 771D, 772G, 772G OEM, 773B, 773D, 773E...
120K 2, 3126B, 322C, 322C FM, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325C, 325C FM, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 328D LCR, 329D, 329D L, 329D LN, 3408, 3408B, 3408C, 3408E,...
120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12E, 12F, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140, 140B, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 1...
1693, 3126B, 3176C, 3196, 3406, 3406B, 3406C, 3406E, 3408, 3408C, 3412, 3412C, 3456, 3508, 3508C, 3512, 3512B, 3516, 561D, 572G, 583K, 594, 594H, 621B, 621R, 623B, 627B, 633D, 637D, 657, 769, 777, 824...
24H, 3408, 3408C, 3408E, 3412, 3412C, 3412D, 3412E, 5110B, 621H, 631D, 631E, 631G, 633E II, 637E, 637G, 651E, 657E, 740B, 769D, 771D, 772, 773B, 773D, 773E, 773F, 773G, 773G LRC, 773G OEM, 775B, 775D,...
16G, 245, 3406, 3406B, 3408, 3408B, 3412, 3412C, 3412D, 621, 621B, 637D, 772B, 773B, 824C, 826C, 980C, 983B, 988B, D44B, D550B, D8L, D9L
1140, 1145, 1150, 1160, 1673C, 1674, 16G, 183B, 225, 245, 245B, 3145, 3150, 3160, 3192, 3208, 3304, 3306, 3406, 3406B, 3406C, 3406E, 3408, 3408B, 3408C, 3412, 3412C, 3412D, 3412E, 375, 55, 561C, 583K,...
14E, 1673C, 1674, 245, 3304, 3306, 3406, 3408, 3412, 518, 561C, 621, 621B, 637D, 651E, 657E, 814, 941, 955L, 966C, 980B, 980C, 992C, D4D, D5, D6C