Cummins — 37. Install the bypass connection gaskets. Tighten the
For these Cummins models: GTA38, GTA38, GTA50, GTA50.
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Procedure
- 43. Connect the water filter lines.
- 44. Fill the cooling system.
- 45. Operate the engine to 70( C [160( F] coolant tem-
- perature and check for leaks.
- Aftercooler Pump - Remove and Install
- Preparatory Steps
- 1. Disconnect battery ground cable from engine to pre-
- vent starting of the engine.
- 2. Drain all coolant from the aftercooler cooling system.
- . Disconnect both the pressure line and the suction
- line from the auxillary aftercooler water pump.
- . Remove both inlet and outlet fittings.
- . Loosen and remove the 4 mounting bolts and nuts.
- . Remove the drive belt.
- . Remove the auxiliary aftercooler drive pulley from
- the pump.
- . Install a new pump.
- install the 4 mounting bolts and nuts and do not
- tighten at this time.
Source: manual:Cummins Gas GTA38-50 Manual 1999 (2).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.