Downloaded from www.Manualslib.com manuals search engine
Edition 08.96
Crank Assembly13
Fig. 2 Inspecting piston ring end clearan-
ce
Special tools, testers and aids required Feeler gauge
- Clean annular groove before inspecting
Piston ring New Wear limit
Dimensions in mm
Fig. 3 Inspecting cylinder bore Special tools, testers and aids required Internal precision measuring instrument 50...100 mm
Inspection procedure
- Measure at 3 points diagonally opposite in transverse direction -A- and in longitudinal direction -B-. Differences compared to nominal size max. 0.10 mm
Note:
The measurement of the cylinder bore must notbe carried out when the cylinder block is
attached to the repair stand with the engineholder MP 1-202 as incorrect measurements
may result.
1st compression ring 0.06 .. 0.09 0.25
2nd compression ring 0.05 .. 0.08 0.25
oil scraper ring 0.03 .. 0.06 0.15
Downloaded from www.Manualslib.com manuals search engine
19Cooling System
Edition 08.96
Installing coolant pipe
- Before installing, clean or smooth sealing
surface for O-ring.
- Moisten O-ring -1- with coolant and fit onto
coolant pipe -2-.
- Insert coolant pipe into the hole on the cylinder block.
- Bolt bracket for coolant pipe tight to 10 Nm-
Testing cooling system for leaks
Special tools, testers and aids required Cooling system tester (e.g. V.A.G 1274)
Adapter (e.g. V.A.G 1274/8)
Adapter (e.g. V.A.G 1274/9)
Test condition
Engine at operating temperature
Test procedure
Important! Hot vapours may escape when the expansionreservoir is opened. Cover over cap with cleaningrags and open carefully.
- Mount tester V.A.G 1274 with adapter V.A.G 1274/8 onto the expansion reservoir.
- Use the priming pump of the tester to produce a pressure of about 0.1 MPa.
- If the pressure drops, locate the leakage point and rectify fault.
Testing pressure relief valve in cap
- Screw cap onto the tester using adapter V.A.G 1274/9.
- Operate the priming pump of the tester to produce a pressure of about 0.15 MPa.
- The pressure relief valve should open at a pressure of 0.12 ... 0.15 MPa.
