Design of chain tensioner - GF05.10-P-7801-01A
Engines 112, 113
Shown on engine 112
Identifying Design Of Chain Tensioner - Engines 112, 113. Scheme 552
Timing chain drive, general - GF05.10-P-9611-01C
Engine 112, 113
Shown on engine 112
Identifying Timing, Markings - Shown On Engine 112. Scheme 553
Engine timing
The basic setting is 40° after TDC.
At 40° after TDC the grooves (6) in the left and right camshafts point in the direction of the inner V and are centered on the parting surface of the cylinder head cover. The copper-plated lugs (1) and marks on the camshaft sprockets (4 and 5) coincide.
The groove in the crankshaft (2) and the mark on the balance shaft sprocket (3) point toward one anther and both coincide with the copper-plated lugs (1).
Rubber-coated sprockets
In order to improve the noise characteristic of the timing case drive the chain sprockets on the crankshaft, balance shaft and camshafts are rubber-coated.
Only on engine 112
6 mm dia. locating holes (a) are located coinciding with one anther in the rear balancing weight on the balance shaft and rear of the crankcase.
Repair note
Due to the difference in the timing chain paths it may be necessary to crank the engine up to 14 times before the marks on the camshafts coincide again.
Identifying Holes - Only On Engine 112. Scheme 554
Only on engine 112
Checking the balance shaft with engine assembled
Two marks, one at the front of the crankcase and the other on the end of the balancing weight, point toward one anther and can be seen through the left timing case shaft approx. 22 cm. below the parting surface of the cylinder head cover when the cylinder head cover is removed.
