Notes The engines are provided with different oil pressure relief valves: On engines 61 5.912/913 the oil pressure relief valve is installed in main oil duct, and on engines 615. 9401 941, 616 and 61 7 i t is screwed to oil pump. On engines 616.91 6 and 61 7.910 differeni oil pressure relief valves… Read More »
Note As a spare part, the oil pump, part No. 115 180 13 01, of engine 115 will be delivered for engines 61 5.91219 13. Removal 1. Drain engine oil. 2. Remove oil pan lower half. 3. Unscrew fastening screw on cy tinder crankcase and on bearing cap. 4. Pull out oil pump. Installation 5.… Read More »
Note The following engines are provided with a thermostat in oil filter: Engine 615 in model 123.1 on vehicles with air conditioning system. Engine 616 in model 123.1 up to August 1978 generally and starting August 1978 on vehicles with air conditioning system only. Engine 617 in models 115.1 and 123.1 generally. Remove functioning thermostat… Read More »
Note The following engines are provided with a thermostat in oil filter: Engine 615 in model 123.1 on vehicles with air conditioning system. Engine 616 in model 123.1 generally up to August 1978 and starting August 1978 on vehicles with air conditioning system only. Engine 617 in model 115.1 and 123.1 generally. Checking 1. Exchange… Read More »
Note When the oil filter is removed, residue from gasket may remain stuck to flange surface of cylinder crankcase. To prevent such residue from entering the clean oil duct (arrow) of cylinder crankcase during removal (e.g. by scraping), make sure to cover or close bores first. Removal 1. On 1 st version, loosen central bolt… Read More »
Oil pressure At operating temperature, the oil pressure at idle may drop to 0.5 bar gauge pressure (0.5 atij). During acceleration, the oil pressure should rise again immediately and should attain at least 3 bar gauge pressure (3 atu) at 3000/min. Pressure relief valve On engine 615, the pressure relief valve is screwed in or… Read More »
A. Model 11 5.1 Removal 1. Remove instrument cluster. 2. Unscrew pull knob and rosette and pull preglow starter switch ( 1 ) into range of combination cutout. 3. Unscrew cable control (3) from steering lock switch (2). 4. Loosen start and stop control (5) to injection pump on preglow starter switch and disconnect. 5.… Read More »
Adjustment 1. Push start and stop control into stop position. 2. Unscrew adjusting screw (6) until steering lock switch is released. Then unscrew by an additional 1 to 1 1/2 turns and counterlock adjusting screw. 3. Check adjustment. Attention! If the preglow starter switch is in driving position, actuation of key in steering lock switch… Read More »
Removal 1. Unscrew all nuts, remove connecting line, connection insulators and conductors. 2. Unscrew glow plugs with box wrench. Installation 3. Prior to installing glow plugs, clean glow plug channels and bores in prechambers with reamer. For this purpose, fill flutes of reamer with grease and ream glow plug channels. Note: In the course of… Read More »
1. Filament wire torn (hair crack) Cause: Start of delivery too early or damaged nozzles (dropping, hanging). 2. Filament wire burnt oat or scorched (wire Mack or brown) Cause: Overheated while driving by damaged nozzles (dropping, hanging), begin of delivery too early or oil in combustion area (e. g. caused by leaking vacuum pump or… Read More »