9J8729 VALVE GP Caterpillar parts
920, 930, 930R
Rating:
Alternative (cross code) number:
CA9J8729
9J-8729
9J8729
CA9J8729
9J-8729
9J8729
Weight: 49 pounds 22 kg.
WHEEL LOADER,
Information:
Table 1
Test Step     Voltage Reading     Voltage should be below this for 12 volt system     Voltage should be below this for 24 volt system    
4        
5        
4 minus 5         1.0 volt     2.0 volts    
6                
7        
6 minus 7         0.5 volt     1.0 volt    
8         0.5 volt     1.0 volt    
Measure the voltage between the alternator "B+" terminal and the alternator case ground.
Measure the voltage across the battery. Put the red lead on the + battery terminal, and put the black lead on the negative battery terminal. Step 5 should be completed as quickly as possible after Step 4.Expected Result: On a 12 volt system, the voltage should not be greater than the voltage that was recorded in Step 4. The voltage must also be within one volt. On 24 volt systems, the voltage is within 2 volts.Results:
YES - If the voltage in Step 4 is not more than 1 volt for 12 volt systems (2 volts for 24 volt systems) higher than the voltage in Step 5, this test is complete and the related wiring is correct at this time. Replace the alternator or go to Testing and Adjusting, "Component - Test" in order to test the internal parts of the alternator.
NO - If the voltage in Step 4 is more than 1 volt for 12 volt systems (2 volts for 24 volt systems) higher than the voltage in Step 5, there is high circuit resistance: corrosion, loose connections and damaged wiring. Continue to Step 6.
Check the voltage between the machine frame and the alternator "B+" terminal. Record the voltage.
Check the voltage between the machine frame and the + battery post. Step 7 should be completed as quickly as possible after Step 6. Expected Result: The voltage difference between Step 6 and Step 7 does not exceed 1 volt on 24 volt systems or 0.5 volts on 12 volt systems. Results:
YES - The voltage difference does not exceed the tolerance. The charging circuit is good. Go to Step 8.
NO - The voltage difference exceeds the tolerance. There is high resistance in the charging circuit: loose cables, corroded cables, damaged cables, faulty circuit breaker and faulty main relay. Correct the problem and retest the system.
Check the voltage between the negative battery post and the alternator case ground. Expected Result: The voltage does not exceed 1 volt on 24 volt systems or 0.5 volts on 12 volt systems. Results:
YES - The voltage difference does not exceed the tolerance. The ground circuit is good. There is an internal problem with the alternator. Replace the alternator or go to Testing and Adjusting, "Component - Test" in order to test the internal parts of the alternator.
NO - The voltage difference exceeds the tolerance. There is high resistance in the ground circuit: loose cables, corroded cables, loose alternator mounting
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Caterpillar parts catalog:
Parts valve Caterpillar catalog:
6V2209
VALVE GRINDING
120G, 130G, 3304, 920, 930, 950, 951B, 955L, D4E
120G, 130G, 3304, 920, 930, 950, 951B, 955L, D4E
5P2100
VALVE GRINDING
930, 977K
930, 977K
6V0600
VALVE GRINDING- SERIAL NO. 78P34523 TO 78P47087 INCLUSIVE
120G, 130G, 3304, 920, 930, 950, 955L, D4D, D4E
120G, 130G, 3304, 920, 930, 950, 955L, D4D, D4E
5J7157
VALVE
16, 611, 613, 613B, 613C, 613C II, 613G, 615, 615C, 621, 621B, 621F, 621R, 623, 623B, 623E, 623F, 627B, 627E, 627F, 631C, 631E, 631G, 633, 633C, 633D, 633E, 633E II, 637D, 637E, 637G, 639D, 641, 641B,...
16, 611, 613, 613B, 613C, 613C II, 613G, 615, 615C, 621, 621B, 621F, 621R, 623, 623B, 623E, 623F, 627B, 627E, 627F, 631C, 631E, 631G, 633, 633C, 633D, 633E, 633E II, 637D, 637E, 637G, 639D, 641, 641B,...
4D2289
VALVE AS
613C, 621E, 631E, 641B, 657, 769C, 769D, 771C, 771D, 772, 773B, 773D, 775B, 775D, 776C, 776D, 777, 777D, 784B, 785B, 789B, 793B, 793C, 920, 926, 930, 936F, 950, 950F, 950F II, 966C, 966D, 966F, 966F I...
613C, 621E, 631E, 641B, 657, 769C, 769D, 771C, 771D, 772, 773B, 773D, 775B, 775D, 776C, 776D, 777, 777D, 784B, 785B, 789B, 793B, 793C, 920, 926, 930, 936F, 950, 950F, 950F II, 966C, 966D, 966F, 966F I...
4D2295
VALVE
613C, 621E, 631E, 641B, 657, 769C, 769D, 771C, 771D, 772, 773B, 773D, 775B, 775D, 776C, 776D, 777, 777D, 784B, 785B, 789B, 793B, 793C, 920, 926, 930, 936F, 950, 950F, 966C, 966D, 980C, 980F, D9H
613C, 621E, 631E, 641B, 657, 769C, 769D, 771C, 771D, 772, 773B, 773D, 775B, 775D, 776C, 776D, 777, 777D, 784B, 785B, 789B, 793B, 793C, 920, 926, 930, 936F, 950, 950F, 966C, 966D, 980C, 980F, D9H
6K6824
VALVE AS-CHECK
518, 528, 623E, 920, 930
518, 528, 623E, 920, 930
6K0248
VALVE AS
120, 12E, 12F, 140, 14E, 910, 916, 920, 926, 926A, 928F, 936F, 938F, 950, 950B, 950F, 950F II, 960F, 966C, 966F, 966F II, 970F, 992, IT12B, IT18B, IT18F, IT28, IT28B, IT28F
120, 12E, 12F, 140, 14E, 910, 916, 920, 926, 926A, 928F, 936F, 938F, 950, 950B, 950F, 950F II, 960F, 966C, 966F, 966F II, 970F, 992, IT12B, IT18B, IT18F, IT28, IT28B, IT28F
4D1138
VALVE
120G, 120H, 12G, 12H, 12H NA, 130G, 135H, 140G, 140H, 140H NA, 143H, 14G, 14H, 14H NA, 160G, 160H, 163H, 16G, 16H, 16H NA, 5110B, 518, 5230, 5230B, 528, 621B, 631C, 633C, 639D, 666, 769, 769C, 769D, 7...
120G, 120H, 12G, 12H, 12H NA, 130G, 135H, 140G, 140H, 140H NA, 143H, 14G, 14H, 14H NA, 160G, 160H, 163H, 16G, 16H, 16H NA, 5110B, 518, 5230, 5230B, 528, 621B, 631C, 633C, 639D, 666, 769, 769C, 769D, 7...
5K9972
VALVE ASSEM.
518, 528, 920, 930, 930R, 950, 966C, 980, 980B
518, 528, 920, 930, 930R, 950, 966C, 980, 980B
6K6825
VALVE ASSEM.
920, 930, 930R, 950, FB518
920, 930, 930R, 950, FB518
4D3398
VALVE
120G, 650B, 666, 768B, 768C, 769, 769C, 770, 770G, 770G OEM, 771D, 772, 772G, 772G OEM, 920, 930, 988, 988B, 992, 992C, AD30, AD45, AD45B, AE40 II, R1600, R1600G, R1600H, R1700 II, R1700G, R2900, R290...
120G, 650B, 666, 768B, 768C, 769, 769C, 770, 770G, 770G OEM, 771D, 772, 772G, 772G OEM, 920, 930, 988, 988B, 992, 992C, AD30, AD45, AD45B, AE40 II, R1600, R1600G, R1600H, R1700 II, R1700G, R2900, R290...
1045013
VALVE GP-RELIEF
824H, 824K, 825H, 825K, 826H, 826K, 834G, 834H, 834K, 836G, 836H, 836K, 844, 844H, 844K, 980H, 980K, 980K HLG, 980M, 982M, 986H, 988G, 988H, 988K, 990, 990 II, 990H, 990K
824H, 824K, 825H, 825K, 826H, 826K, 834G, 834H, 834K, 836G, 836H, 836K, 844, 844H, 844K, 980H, 980K, 980K HLG, 980M, 982M, 986H, 988G, 988H, 988K, 990, 990 II, 990H, 990K
4T5008
VALVE GP
926, 926A, 936, 936F, D6H, D7H, G926, G936, IT28, IT28B
926, 926A, 936, 936F, D6H, D7H, G926, G936, IT28, IT28B
9J0622
VALVE GP-RELIEF
768C, 769C, 769D, 771C, 771D, 772B, 773B, 773D, 775B, 775D, 776, 776C, 777, 777B, AD40, AD45, AE40
768C, 769C, 769D, 771C, 771D, 772B, 773B, 773D, 775B, 775D, 776, 776C, 777, 777B, AD40, AD45, AE40
6E3035
VALVE GP-CONTROL
120H, 120H ES, 120H NA, 120K, 120K 2, 12H, 12H ES, 12H NA, 12K, 135H, 135H NA, 140H, 140H ES, 140H NA, 140K, 140K 2, 143H, 160H, 160H ES, 160H NA, 160K, 163H, 163H NA, 16H
120H, 120H ES, 120H NA, 120K, 120K 2, 12H, 12H ES, 12H NA, 12K, 135H, 135H NA, 140H, 140H ES, 140H NA, 140K, 140K 2, 143H, 160H, 160H ES, 160H NA, 160K, 163H, 163H NA, 16H
1540533
VALVE GP-CONTROL
320B, 320B FM LL
320B, 320B FM LL
6E3173
VALVE GP-CONTROL
120G, 12G, 130G, 140G, 160G
120G, 12G, 130G, 140G, 160G
2273021
VALVE GP-PUMP CONTROL
D10N, D10R, D6R, D6R II, D6R III, D6R STD, D7R II, D7R XR
D10N, D10R, D6R, D6R II, D6R III, D6R STD, D7R II, D7R XR
2555588
VALVE GP-REGENERATION
345B II, 345B II MH, 345B L, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, W345B II, W345C MH
345B II, 345B II MH, 345B L, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, W345B II, W345C MH
3237792
VALVE AR-LOAD CONTROL
311D LRR
311D LRR
1073255
VALVE GP-ROTARY
910G, 914G, IT14G, IT14G2, PF-290B
910G, 914G, IT14G, IT14G2, PF-290B
2140081
VALVE GP-LOAD CONTROL
740, 740B
740, 740B