ARMY TM 9-2815-256-24
AIR FORCE TO 38G1-96-2
MARINE CORPS TM 2815-24/5
3-27.5.3 Roller Shoes.
Roller shoes are available in three sizes and are marked on the end, e.g. -010 (PN 20119), -.005 (PN 20124)
and -.015 (PN 20120). All four shoes must bear same mark.
Two each of two different plungers are used with basic part numbers of 11046 and 20250. Four additional
standard sizes and four additional oversizes are available for each type of plunger as listed below.
11047 thru 11050
20252 thru 20254
11052 thru 11055
20256 thru 20259
Rotors with no etching on base of rotor will use plungers of basic part numbers (11046 and 20250). Rotors with
"A", "B", "C", or "D" etched on head will use plungers of one of the additional. standard sizes with "A" indicating
lowest part number and "D" indicating highest part number. Rotors with "-2" etched on head following one of the
letters will use one of the oversize plunger part numbers depending on which letter is etched on rotor.
The multiple parts sizes were required to achieve specified roller to roller dimension and centrality during original
manufacturing. Additionally when any of these parts are replaced during repair, it may be necessary to
interchange relative positions or parts in order to meet specifications.
Components except basic head or rotor which are corroded or damaged during handling may be replaced.
Otherwise, when components exhibit wear or damage from pump operation, head and rotor should be replaced
as an assembly. Also, a basic head and rotor cannot be obtained and replaced individually.
Throughout assembly procedures it is stated to use grease on various parts. Do so sparingly as it
can plug return fittings and pump will not bleed air from housing during startup.
In addition to the parts supplied with the repair kits, cam (17, FIGURE 3-64), delivery valve stop (35,
FIGURE 3-73), and connector assembly (1, FIGURE 3-64) must be replaced during assembly.
Parts which must be replaced and are not included in the repair kits are lockwashers, delivery valve
stop (35, FIGURE 3-73), insulator washers (15, FIGURE 3-64), and pilot tube (1, FIGURE 3-73).
Place six rubber cushions (32) on retainer pins of retainer assembly (33).
Do not handle precision machined rotor surfaces. Damage due to corrosion could occur.
Rinse rotor (48) thoroughly in clean diesel fuel or calibrating oil.