770G and 772G Off-Highway Truck Power Train Caterpillar


Worksheet

Usage:

770G ECM

770G和 772F 动力传动系测试

机器型号____________________

日期 ____________________

机器序列号____________________

机器工作小时数____________________

变速箱系列号____________________

变速箱工作小时数____________________

变矩器序列号____________________

变矩器工作小时数____________________

底盘 ECM 零件号____________________

底盘 ECM 序列号____________________

软件零件号____________________

软件发布日期____________________

目测

机油品牌和粘度____________________

机油油位____________________

吸油滤网上的碎屑____________________

机油泄漏____________________

机油滤清器检查____________________

机油中的空气/水____________________

表 1
变速箱齿轮    
档位     接合的离合器    
N     1    
R     3 和 7    
1     2 和 6    
2     1 和 6    
3     3 和 6    
4     1 和 5    
5     3 和 5    
6     1 和 4    
7     3 和 4    

变速箱压力

表 2
变速箱充注标定测试压力    
离合器     技术规格压力     实际压力    
1    
3100 ± 34 kPa (450 ± 5 psi)    
   
2    
1725 ± 34 kPa (250 ± 5 psi)    
   
3    
2415 ± 34 kPa (350 ± 5 psi)    
   
4    
1930 ± 34 kPa (280 ± 5 psi)    
   
5    
3100 ± 34 kPa (450 ± 5 psi)    
   
6    
3100 ± 34 kPa (450 ± 5 psi)    
   
7    
3100 ± 34 kPa (450 ± 5 psi)    
   
锁定离合器    
2070 ± 34 kPa (300 ± 5 psi)    
   

表 3
    技术规格     实际值    
低怠速 高怠速     低怠速     高怠速    
动力传动系齿轮泵压力    
3100 ± 34 kPa (450 ± 5 psi)    

3240 ± 69 kPa (470 ± 10 psi)    
       
润滑压力    
21 ± 14 kPa (3 ± 2 psi)    

172 ± 34 kPa (25 ± 5 psi)    
       
失速转速下的变矩器出口压力     无规格    
310 ± 34 kPa (45 ± 5 psi)    
N/A        
变速箱油温 (3)    
71° 至 94° C (160° 至 201° F)    
   
变矩器油温    
71° 至 94° C (160° 至 201° F)    
   
( 3 ) 在测试过程中

Caterpillar Information System:

770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Brake Oil Cooler (Rear)
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2011/02/17 Replacing the Lock Assembly on Certain Generator Sets {7274}
770G and 772G OEM Off-Highway Truck Power Train Hydraulic System Troubleshooting
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770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Hoist System Troubleshooting
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770G and 772G Off-Highway Truck Systems Service Brake Discs - Check
770G and 772G Off-Highway Truck Systems Service Brakes and Retarder System Pressure - Test
770G and 772G Off-Highway Truck Systems Secondary Brake System Pressure Test
770G and 772G Off-Highway Truck Systems Slack Adjuster - Test and Adjust
770G and 772G Off-Highway Truck Systems Gear Pump (Brake, Brake Cooling, Hoist) - Purge
770G and 772G Off-Highway Truck Systems Brake Cooling Pressure - Check
770G and 772G Off-Highway Truck Systems Brake System Air - Purge
770G and 772G Off-Highway Truck Systems Hoist Control - Adjust
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