THREE-SECTION HYDRAULIC PUMP ASSEMBLY
Shop Equipment Auto-Maintenance and Repair, FM Suppl No. 1
Tool Outfit Hyd System, Test and Repair, 3/4 Ton Trailer Mtd
Three-Section hydraulic pump assembly removed. (Refer to
It will be necessary to pry
components off dowel pins (6). Pry
When securing pump in a vise, do not
from opposite sides.
grip on or near machined surfaces.
c. Remove port end cover (5).
1. REMOVE PORT END COVER (5).
2. REMOVE GEAR HOUSING (12).
a. Place pump in a vise with shaft pointing down.
Index mark all sections with a prick punch for
proper alignment during assembly.
If it is necessary to pry housing
b. Remove nuts (2), washers (4) and studs (3)
loose, use care to avoid damaging
securing port end cover (5).
a. Remove gear housing (12) from gears (13).
If thrust plate (10) remains in gear
b. Remove and discard performed packings (11).
housing (12), tap it out with a wooden
hammer handle. Avoid distorting the
3. REMOVE DRIVE AND DRIVEN GEARS (13) AND
KEEP THEM TOGETHER AS THEY ARE A
4. REMOVE CONNECTING SHAFT (14).