HEAD GP-PUMP 2536010 - Caterpillar

Table 1
Required Tooling
Part Number Quantity
392-3960 Adapter Plug 1 A compression test should not be the only method which is used to determine the condition of an engine. Other tests should also be conducted in order to determine if the adjustment or the replacement of components is required.Before the performance of the compression test, make sure that the following conditions exist:
The battery is in good condition.
The battery is fully charged.
The starting motor operates correctly.
The valve lash is set correctly.
The fuel supply is disconnected.
Illustration 1 g02711581
Start the engine. Bring the engine to normal operating temperature.
Stop the engine.
Disconnect the fuel supply.
Remove all of the glow plugs.
Install a compression gauge with the 392-3960 Glow Plug Adapter into one of the glow plug holes.
Operate the starting motor in order to turn the engine. Record the maximum pressure which is indicated on the compression gauge.
Table 2
New: 2.95 MPa (428 psi) to 3.23 MPa (468 psi)
Allowable: 2.35 MPa (341 psi) Note: If the measurement is below the allowable limit, examine the cylinder wall and the piston rings.Note: The difference between cylinders should not be more than 10%.
Repeat the entire procedure for the rest of the cylinders.