How does an injection pump in a dieselduck work?
Since displacement and pressure of the transfer pump can exceen injection requirements, some of the fuel is recirculated to the inlet side of the supply pump by a regulating valve. Starting from the bottom, as the pump rotates the volume increases between the vanes. The increasing volume draws fuel into the supply pump.
What kind of wrench do I need for DS4 injection pump?
GM tool #J-41089 is used to loosen the three nuts on the injection pump. An S-shaped 15mm wrench should also work. (Jim’s Notes: I’ve used a regular 15mm 12 point box end wrench to R&R both the DS4 and DB2 injection pumps. The GM tool would make the work easier, however. A set of deep metric sockets will also make things easier. Parts Needed:
Where is the governor on a Bosch injection pump?
At the top of the injection pum is a control lever (C), a control-lever shaft (D), and an overflow (retun fuel) valve. Engine idle RPM and maximum speed can be adjusted by the idle-speed adjusting bolt and maximum-speed adjusting bolt. Under the top cover is the governor mechanism. FIGURE 1: Cutaway of VE injection pump showing component location.
Where is the advance timing device on an injection pump?
At the bottom of the injection pump is the automatic advance-timing device. As fuel-supply pump presure increases the piston moves the roller ring opposite to driveshaft rotation, advancing injection timing.
How big is a HPD drive for a pump?
HPD Drive Plate/Clutch Nominal Size (per SAE J620) for Plate Diameter SAE Housing Clutch Model 6 = 6.5 in. 2 or 3 C110 7 = 7.5 in. 2 or 3 C111 2 or 3 P111 10 = 10 in. 0 or 1 P211 0 or 1 P114 0 or 1 P214 18 = 18 in. P314
How can I Check my hydraulic pump drive?
1. Obtain from the engine manufacturer a torsional vibration and bending fatigue analysis. Torsional vibration on the HPD will be furnished by GPI upon request. 2. A three (3) point elastomer isolator mount is recom- mended to prevent the engine and HPD from becoming a structural member of the equipment.
What happens if a hydraulic pump drive is not compatible?
Disregarding system torsional compatibility can cause damage to components in the drive train, resulting in a loss of mobility for which the hydraulic pump drive is intended. At a minimum, system torsional incompatibility will result in undesirable noise and vibration at low speeds.