B. MW and M/RSF-Injection Pump With Mechanical Governor

Removal and Installation of Injection Pump

B. Engine 615, 616, 617 MW and M/RSF-injection pump with mechanical governor

Test Values:

Tightening Torques:

Special & Self-Made Tools:

Note
On engine 617 in model 123.1, remove oil filter.
On engine 617 in model 115.1, remove battery and battery frame,


Removal

1 Pull vacuum hose on vacuum box and electric cable, disconnect regulating rod, unscrew injection lines and fuel lines on injection pump. Place closing caps on connections for injection lines and fuel hoses on injection pump.

Model 115.1:

Model 123.1:

2 On MW-injection pumps, unscrew lube oil line (5).

Attention! Prior to removing lube oil line (5), clean connecting points.




3 Unscrew hex screws on supporting holder (4) and the three fastening nuts of injection pump. Loosen fastening screw (3) 50 that adjustments on slot can be made.




4 On engine 617 in model 115.1, use self-bent 13 mm box wrench according to drawing for loosening front fastening nuts.

5 Pull injection pump out of cylinder crankcase. Remove coupling sleeve from driver of injection pump or from drive shaft.

Note: When replacing a driver, apply counterhold with notched tooth wrench for loosening hex nut, then pull driver from injection pump shaft by means of puller. Clean shaft stub and driver; the two cones must be absolutely clean and free of grease.




When mounting a new driver, pay attention to Woodruff key and to markings (arrows).


Installation




Prior to installing a replacement injection pump proceed as follows:

a) For initial filling, add 0.4 liter engine oil after removing closing plug (arrow).




b) Check control rod for easy operation (except injection pumps with altitude adjusting box):

MW-injection pump

Unscrew lower righthand fastening screw (arrow) on shutoff box.




Insert a plug gauge through bore up to stop Push plug gauge slightly against control rod. Move regulating lever on injection pump from idle speed to full load stop. Plug gauge should closely follow control rod.

If control rod is hard to move under the influence of resinification, add clean gasoline into fuel feed connection to act on elements for a short period~

Push control rod back and forth until it is freely moving.

M/RSF-injection pump




Remove closing cap of control rod.

Move regulating lever on injection pump from idle speed to full load stop. Control rod should return automatically.

If control rod is hard to move under influence of resi- nification, fill clean gasoline into fuel feed connection to act on elements for a short period.

Push control rod back and forth until it is freely moving.




The injection pump receives the oil required for lubrication via intermediate gear shaft and hollow camshaft of injection pump.

The oil flows back into cylinder crankcase via ring gap (2) on sealing flange of camshaft.

For sealing coupling space between intermediate gear shaft and camshaft an 0-ring (3) is inserted in drive pinion.

When removing and installing injection pump, make sure that the 0-ring (3) is not damaged. Always replace damaged 0-rings.




On vehicles with automatic transmission and vacuum control valve:

Unscrew vacuum control valve from removed injection pump, screw to injection pump about to be installed and adjust. For this purpose, push regulating lever of injection pump to full load and turn vacuum control valve to the right (arrow) up to noticeable stop. In this position, tighten fastening screws.




6 Set crankshaft to begin of delivery in compression stroke.




7 Mount new gasket.

8 Set injection pump to mark. For this purpose, rotate camshaft of injection pump until marking line on camshaft is in alignment with line on flange (arrows).




9 Slip coupling sleeve on driver and introduce injection pump. Mount washers and slightly tighten injection pump by means of hex nuts.

Note: On engine 617 in model 115.1, unscrew oil hose (7) for easier access of washer and nut (2).

10 Check begin of delivery Checking Injection Pump For Begin of Delivery and adjust. Adjusting Injection Pump For Begin of Delivery Then tighten injection pump.

11 Take supporting holder (4) from removed injection pump.

For attaching supporting holder, use only spacing washers and hex screws intended for engine. Screw supporting holder to cylinder crankcase first, and then tighten fastening screw in oblong hole (slot) of supporting holder.

12 Vacuum hose on vacuum box, mount electric cable. Connect all fuel lines.

13 On MW-injection pumps, reattach lube oil line to injection pump.

14 Mount oil filter and oil filter cover with new gasket.

15 Mount battery frame and battery and connect.

16 Vent injection system with manual delivery pump. Service and Repair

17 Check regulating linkage and adjust, if required.

18 Run engine to operating temperature and check all connections for leaks.

19 Check idling speed and adjust. if required. Adjustments

P�gMixture Preparation:

�LhMixture Preparation:

Fuel Filter:

Fuel Filter: