Usage:
1. All parts must be thoroughly cleaned prior to reassembly by dipping in solvent and brushing to remove all traces of contamination. Pump should be assembled in a dirt free area.
2. Install shaft seal (1), if it was removed, in front cover with the spring loaded lip facing inward. Force seal into place, using a flat steel rod slightly smaller in diameter than the O.D. of the seal. This will permit the tool to enter the seal recess and bottom the rotary seal on the stop. (The front cover (5) must be backed up on a smooth, clean surface to prevent damaging its face.)
The load to force seal into place should be applied exactly in line with the housing seal bore to prevent bending the seal steel retainer, and/or scoring the seal housing bore.
3. Install the "V" seal (6), the gasket (8), and heat shield (9) into the front cover cavity as follows:
The small vent hole through all of these parts shall be in line and positioned next to the scribe mark on the island previously made during disassembly. This position locates the vent holes on the outlet side of the pump.
The lips on the V seal shall face toward the cavity and be tucked into the groove with the aid of a dull tool to prevent damage to the rubber surface. A small screw driver can be used.
The gasket shall be pressed firmly toward the bottom of the cavity with the thumbs so as to insure all of its perimeters are completely within the groove to avoid interference with subsequent assembly.
The heat shield shall be firmly pressed toward the bottom of the cavity with the thumbs to provide sufficient space for the wear plate.
4. Install "O" Ring (11) into the groove provided in front cover face. Oil the "O" Ring and stretch it slightly, if necessary, so that it will remain in its groove.
5. Install the wear plate (10) with the bronze surface against the gears and the small vent hole in line with the hole in the heat shield. Press the wear plate. The wear plate shall be sufficiently within the oval cavity so that it is axially retained.
6. Install drive gear (13) and driven gear (14) assemblies into the front cover. Apply oil to the shaft at the drive end to prevent damage to the shaft seal caused by sharp edges on the drive shaft passing through the shaft seal. An oil coated shaft, rotated slowly, will usually cause no damage to the seal. Check to see that the shaft seal lip and spring is not pushed out by the shaft.
7. Check wear plate to insure it is still seated into its oval cavity and install the center section (12) over the gears until it engages the wear plate. Center section must be positioned so that the previously scribed lines on the housing exteriors are in line with those scribed on the front cover. The small slot located midway between the bores should align with the small vent hole in wear plate. The face containing the slot shall be in contact with the wear plate.
Then, install dowel pins (7) and add a generous amount of clean oil into the gear cavities. Rotate gears to distribute the oil.
8. Position the thrust plate (22) on top of the gears in the center section, with the bronze face toward the gears. The open side should be toward the inlet.
9. Install "O" Ring (11) into its back cover face groove. Oil the "O" Ring, the cover face, and the bearings. Install the back cover so that the scribe marks are in line with the marks on the center section and front cover.
10. The housing retaining screws shall be alternately tightened to 190-210 in. lbs. on the "D" Series, 190-210 in. lbs. on the "H" Series and 355-375 in. lbs. on the "M" Series.
Add a generous amount of clean oil into both ports to insure the pump is adequately lubricated. Rotate the drive shaft to distribute the oil and check for freedom of shaft rotation. Shaft shall be free to rotate with the help of a short wrench. (100 in. lbs. maximum)