HOSE AS 1166189 - Caterpillar

Table 1
Required Tools    
Part Number     Description     Quantity    
8T-0855     Pressure Gauge     1    
Illustration 1 g00635189
Selector Group (1) Relief valve for the transmission oil pump (2) SpacersThe test will determine the following conditions:
The transmission oil pump is good.
The relief valve for the transmission oil pump (1) is set correctly.Procedure
Illustration 2 g00986145
Left Rear Side of the Scraper Transmission (A) Pressure tap for transmission oil pump
At pressure tap (A), connect a hose group to the nipple assembly.
Connect a 8T-0855 Pressure Gauge to the hose.
While the parking brakes are engaged, start the scraper engine and operate the engine at LOW IDLE rpm. The transmission should be in the NEUTRAL position. The pressure gauge should read a minimum of 2690 kPa (390 psi).
Operate the scraper engine at HIGH IDLE rpm with the transmission in the NEUTRAL position. The pressure on the gauge should read a maximum of 3310 kPa (480 psi).
When the test is complete, stop the engine and remove the test equipment.Results
Table 2
Spacer Chart    
Part Numbers for Spacers (2)     Thickness     Change in Pressure    
5M-9624    
0.25 mm (0.010 inch)    
46 kPa (7 psi)    
5M-9623    
0.91 mm (0.036 inch)    
165 kPa (24 psi)    
5M-9622    
1.57 mm (0.062 inch)    
290 kPa (42 psi)    Note: Before an adjustment is made, make sure that the valve spring is not weak or broken.If the oil pressure is too low, the following conditions occurred:
The transmission oil pump has failed.
The setting of the relief valve for the transmission oil pump (1) is too low. Add spacers (2). Refer to Table 2. Adjust for LOW IDLE engine setting.If the oil pressure is too high, the following conditions occurred:
Setting of the relief valve for the transmission oil pump (1) is too high.
Remove spacers (2). Refer to Table 2. Adjust for LOW IDLE engine setting.