Section13PROPULSION
Subsection 01 (JET PUMP)
F01J13A
1
2
TYPICAL
1. Water passages
2. Oil passages
Brush and clean impeller shaft threads, impeller
and drive shaft splines with pulley flange cleaner
(P/N 413 711 809) or equivalent. Free threads and
splines from any residue.
CAUTION: Be careful not to damage impeller
shaft diameter.
PARTS INSPECTION
Impeller
Visually inspect impeller splines. Check for wear
or deformation. Renew parts if damaged.
NOTE: Check also PTO flywheel and drive shaft
condition. Refer to BOTTOM END and DRIVE
SYSTEM.
Examine impeller in wear ring for distortion.
Check if blade tips are blunted round, chipped or
broken. Such impeller is unbalanced and will vi-
brate and damage wear ring, impeller shaft, shaft
seal or bearings. Renew if damaged.
F02J0VB
1
1. Replaced if blunted round or damaged
Check impeller for cavitation damage, deep
scratches or any other damage.
F02J0UA
1
1. Check for cavitation, deep scratches or other damage
Wear Ring
Check wear ring no. 4 for deep scratches, irregular
surface or any apparent damage.
If impeller/wear ring clearance is too large and im-
peller is in good shape, renew wear ring.
Needle Bearing and Impeller Shaft
WEAR
Inspect needle bearings no. 6 and no. 8 and their
contact surface. Check for scoring, pitting, chip-
ping or other evidence of wear.
With your finger nail, feel contact surface of seal.
If any irregular surface is found, renew impeller
shaft no. 7.
smr2004-Complete Line Up 623
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