Engine Oil Pressure: Testing and Inspection

Test Oil Pressure

Shown On Engine 112:

Remove/Install

DANGER:
- Lethal injuries are possible if vehicle slips off of lifting platform
- Align vehicle between the columns of the hydraulic hoist and position the four support plates below the hoist support points specified by the vehicle manufacturer.

1 Unclip cover at face end of engine
- Model 211, 220

2.1 Remove engine trim panel or cleaner
- Except Model 170.466, 203.065/265, 211.061/065/070, 230.467/474/475

NOTE: Detach engine cover or air cleaner by lifting vertically up and off the cylinder head covers.

2.2 Remove air cleaner housing
3 Remove fan shroud (9) together with electric fan (8)
- Except Model 209, 211.061/065/070, 230.475

NOTE: Model 163: Unscrew bolts at bottom of fan shroud (9).

4 Remove screw plug (4) together with seal (5) at timing case

NOTE: Installation: Install new seal in order to avoid oil loss.

5 Connect oil-pressure manometer (1) to connecting pipe (2) on timing case

Inspecting
6 Inspect engine oil level, adjust to correct level if necessary
- Except Engines 112.912/913/946/949, 113.967/968/987

7 Connect remote thermometer (6)

NOTE: Guide temperature sensor through the dipstick guide tube into the engine oil.

DANGER:
- Risk of accident from vehicle starting off by itself when engine running. Risk of injury as working around the engine during start-up or while running may result in contusions and burns
- Secure vehicle to prevent it from moving.
- Wear closed and tight-fitting work clothes.
- Do not grasp hot or rotating parts.

8 Start engine, measure oil pressure

NOTE:
- Bring engine up to operating temperature (approx. 80 degrees C).
- When the throttle is opened, the oil pressure must rise without any delay.

9 Install in the reverse order.