A45425.0.pdf

U.S. COAST GUARD

ASSET COMPUTERIZED MAINTENANCE SYSTEM

CB-OTH IV

A45425.0

REV’D: 02/25/15

ASSET NUMBER OPERATING ACTIVITY MAINTENANCE ACCOMPLISHED MAINTENANCE DUE

DATE ASSET HOURS DATE ASSET HOURS

MO DAY YEAR MO DAY YEAR

ZULU DATE ZULU TIME

MO DAY YEAR

SERIAL NUMBER TRACKED ITEM – ALL INFORMATION REQUIRED

ITEM NO.

[ ] DUE

CMS CODE ACTION DESCRIPTION CEINUM

A45425 REPLACE JET IMPELLER OH-A450-001

SCHEDULED UNSCHEDULED

JET SERIAL NUMBER:

MAN HOURS: MK___.___ DC___.___ EM___.___ ET___.__ GM___._ BM___.___ FN___.___ SN___.___ OTHER___.___

REMARKS INDICATING THE REASON FOR REMOVAL ARE REQUIRED

REMARKS:

TECHNICIAN’S

SIGNATURE___________________________________________________

TECHNICIAN’S

ID__________________________________

*ASTERISK INDICATES QA REQUIRED

* QA (1)

*QA (2)

REFERENCES:

Hamilton Jet HJ292 Jet Unit Manual R1A12

REVIEWED

BY LOG YN DATA ENTRY

COMPLETED

MK FN

NAME: TECH ID/TH: _______/_____ NAME: TECH ID/TH: _______/_____

NAME: TECH ID/TH: _______/_____ NAME: TECH ID/TH: _______/_____

NAME: TECH ID/TH: _______/_____ NAME: TECH ID/TH: _______/_____

DC SN

NAME: TECH ID/TH: _______/_____ NAME: TECH ID/TH: _______/_____

NAME: TECH ID/TH: _______/_____ NAME: TECH ID/TH: _______/_____

NAME: TECH ID/TH: _______/_____ NAME: TECH ID/TH: _______/_____

EM OTHER

NAME: TECH ID/TH: _______/_____ NAME: TECH ID/TH: _______/_____

NAME: TECH ID/TH: _______/_____ NAME: TECH ID/TH: _______/_____

NAME: TECH ID/TH: _______/_____ NAME: TECH ID/TH: _______/_____

ET

NAME: TECH ID/TH: _______/_____

GM

BM

1. JET IMPELLER REPLACE

REFERENCES:

COMDTINST 9077.1 (series) Equipment Tag-Out Procedure

MPC A43005.0

MPC A45420.0

MPC A45455.0

TOOL/TEST EQUIPMENT:

Gloves, Disposable, P/N: 6005PF LG, CAGE: 0YSA1, NIIN: 014920178, (Or equivalent)

Goggles, Industrial, P/N: 9400 CHEMICAL CLEAR 4C, CAGE: 65240, NIIN: 013642994, (Or equivalent)

Wrench, Torque, 24-240 in-lb

Wrench, Torque, 60 to 300 ft-lb

EXPENDABLES:

Bearing, Sleeve, P/N: 111202, CAGE: 1PWP4, NIIN: 015262219

Impeller, Pump, Centrifugal, P/N: 105681, CAGE: 1PWP4, NIIN: 015277864

Parts, Kit, Centrifugal, Pump, P/N: 203286 CAGE: 1PWP4, NIIN: 016270568

Seal, Non-metallic Round Section, P/N: 104190, CAGE: 1PWP4, NIIN: 014476117

CONSUMABLES:

Sealant Compound, P/N: LOCTITE 243, CAGE: 05972, NIIN: 0113229264

A. PRELIMINARY STEPS

WARNING (3163)

VARIOUS STEPS IN THIS PROCEDURE

EMPLOY ITEMS ON THE HAZARDOUS

MATERIAL LIST. BEFORE EXECUTING THIS

MPC, REFER TO THE MSDS/SDS FOR FULL

SAFETY AND HANDLING PROCEDURES.

1. Ensure area is safe for maintenance.

WARNING (3012)

ENSURE EQUIPMENT IS PROPERLY

TAGGED OUT. FAILURE TO COMPLY MAY

RESULT IN SERIOUS INJURY OR DEATH.

2. Complete Red Danger Tags IAW COMDTINST 9077.1(series).

B. REPLACE IMPELLER

1. Remove impeller.

a. Remove the jet tail pipe assembly, (Refer to MPC A45420.0).

b. Remove the jet marine bearing, (Refer to MPC A45455.0).

c. Remove the marine bearing sleeve.

(1) Disconnect the jet drive from the drive shaft at the coupling, (Refer to MPC A43005.0).

(2) Fit the torque arm found in parts kit, P/N: 203286, to the coupling on the jet drive to prevent the shaft from turning during removal, (Refer to Figure 1).

(3) Remove the impeller nut, (Refer to Figure 2).

(a) Remove the impeller nut set screw.

1) Retain hardware for reinstallation.

(b) Remove the impeller nut using the 50 MM socket found in the parts kit.

1) Retain hardware for reinstallation.

(4) Remove the main bearing sleeve from the shaft.

d. Loosen the impeller fairing set screws, (Refer to Figure 3).

(1) Access the impeller fairing through the inspection hatch.

(2) Loosen the set screws by turning the screws one turn counterclock wise.

e. Fit the Impeller puller found in parts kit to the impeller, (Refer to Figure 4).

f. Turn the forcing screw on the impeller puller clock wise until the impeller releases from the main shaft.

(1) Remove the impeller key from the shaft.

(2) Ensure the locating dowel remains fitted to the shaft.

2. Don disposable gloves and goggles.

WARNING (1250S)

AVOID EYE CONTACT, SKIN CONTACT,

AND INGESTION WITH SEALING

COMPOUND. KEEP AWAY FROM ALL

SOURCES OF IGNITION AND OXIDIZERS.

WASH EXPOSED SKIN THOROUGHLY

AFTER HANDLING. FAILURE TO COMPLY

MAY RESULT IN PERSONAL INJURY.

(a) Apply sealant, P/N: LOCTITE 243, into the dowel hole on the shaft.

(b) Insert the end of the dowel that has primer on it into the dowel hole in the shaft.

1) Tap the dowel into the hole with a plastic mallet.

b. Remove the impeller seal.

c. Discard impeller seal.

d. Remove the impeller fairing.

(1) Retain the impeller fairing for reinstallation.

3. Install the impeller, P/N: 105681.

a. Install the impeller fairing over the shaft past the taper.

b. Install the seal over the main shaft past the taper.

c. Install the impeller key into the shaft key way.

(1) Ensure the locating dowel is fitted in the key way.

d. Slide the impeller on to the shaft over the impeller key.

e. Install the marine bearing sleeve by sliding it onto the shaft and fitting it into position

f. Install the torque arm to the jet coupling to prevent the shaft from turning during reinstallation.

g. Install the impeller nut

(1) Torque impeller nut to 370 ft-lb, with a torque wrench.

(2) Apply thread sealant, P/N: LOCTITE 243, to the threads of the impeller nut set screw.

(3) Thread the impeller nut set screw into the impeller nut.

(4) Torque the impeller nut set screw to 108 in-lb using torque wrench.

h. Slide the impeller seal a with the impeller fairing up against the nose of the impeller by accessing them through the inspection hatch.

WARNING (1250S)

AVOID EYE CONTACT, SKIN CONTACT,

AND INGESTION WITH SEALING

COMPOUND. KEEP AWAY FROM ALL

SOURCES OF IGNITION AND OXIDIZERS.

WASH EXPOSED SKIN THOROUGHLY

AFTER HANDLING. FAILURE TO COMPLY

MAY RESULT IN PERSONAL INJURY.

(1) Apply thread locker, P/N: LOCTITE 243, to the threads of the impeller fairing set screws.

(2) Torque the impeller fairing set screws evenly to 48 in-lb using torque wrench.

i. Install the marine bearing, (Refer to MPC A45455.0).

j. Install the jet tail pipe assembly, (Refer to MPC A45420.0).

k. Connect the jet drive coupling, (Refer to MPC A43005.0).

C. FINAL STEPS

1. Remove Red Danger Tags IAW COMDTINST 9077.1 (series)

2. Perform an operational check.

3. Store, segregate or dispose of hazardous materials IAW all applicable local, state, and federal regulations.

4. Record maintenance actions by completing appropriate sign off, and adding pertinent remarks.

DRIVE SHAFT AND JET DRIVE COUPLING

Figure 1

MARINE BEARING SLEEVE

Figure 2

IMPELLER FAIRING

Figure 3

IMPELLER ASSEMBLY

Figure 4

1. JET IMPELLER REPLACE