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Using plyers (or hammer and pin punch), pull (or drive) cotter pin out of 3.
castle nut.
B. Remove inducer nut.
If pump is a RSD. 1.
a) If using a 2-1/2-in socket and impact driver (set CCW).
i. Hold inducer (or input shaft) by hand. (Use proper PPE.)
ii. Using 2-1/2-in n socket and impact driver (set CCW), loosen castle nut.
b) If using a 2-1/2-in (or adjustable) wrench and strap wrench:
i. Hold impeller (or input shaft) with a strap wrench.
ii. Using 2-1/2-in (or adjustable) wrench, loosen (turn CCW) castle nut.
If pump is an MBP. 2.
a) If using a 1 3/4-in socket and impact driver (set CCW):
i. Hold inducer by hand. (Use proper PPE.)
ii. Using 1 3/4-in socket and impact driver (set CCW), loosen castle nut.
b) If using a 1 3/4-in (or adjustable) wrench and strap wrench:
i. Hold impeller with a strap wrench.
ii. Using 1 3/4-in (or adjustable) wrench, loosen (turn CCW) castle nut.
Remove castle nut. 3.
DO NOT STRIKE THE INDUCER OR IMPELLER. STRIKING THE INDUCER OR IMPELLER
MAY RESULT IN IRREPARABLE DAMAGE.
C. Remove inducer.
Pull inducer off pump shaft by hand if possible. 1.
If inducer can NOT be removed by hand, use wedges and puller to pull in-2.
ducer. Loosen inducer as follows:
a) Install puller (See APPENDIX B, Test Equipment And Special Tool Information) on
inducer. (See page B–1.)
b) Place 1/2-in (M12) flanged nut (flange toward pump shaft) between pump shaft
and puller drive screw (protects shaft threads).
c) Using a wrench (or socket and ratchet), tighten puller drive screw until inducer
comes loose.
d) Remove 1/2-in (M12) flanged nut and puller.
Then pull inducer off pump shaft by hand. 3.
Remove inducer/pump shaft key. 4.
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