Related Manuals for SPX Marley Geareducer 34.4 Series
Summary of Contents for SPX Marley Geareducer 34.4 Series
- Page 1 u s e r m a n u a l 34.4 - 3400 Series Geareducer ® I N STA L L AT I O N - O P E R AT I O N - M A I N T E N A N C E Z0504563_A ISSUED 06/2017 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT.
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Page 2: Operation And Maintenance
operation and maintenance Protection Against Corrosion Seasonal Shutdown one week to three months As shipped, a Marley Geareducer is protected internally At start of shutdown period, operate Geareducer until oil is against corrosion with machine enamel on unmachined parts and warm—120°F (50°C)—and change the oil. - Page 3 operation and maintenance Alternate procedure: Maintenance of the Geareducer should be scheduled as fol- lows: The cooling tower has an external oil gauge and drain line equipped with a three-way valve below the oil level gauge. See Figure 1. Monthly: Check oil level at least once a month using the fol- lowing procedure: 1.
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Page 4: Oil Level
Repair and Overhaul If your Geareducer ever needs replacement or repair, SPX rec- ommends returning the unit to a Marley factory service center. OIL LEVEL VENT Contact your Marley sales representative to discuss a course of PLACARD action. - Page 5 operation and maintenance l a i & n i l c i t l i b l i b l i b l i b l i o l l e l i h p i l l l e &...
- Page 6 3400 Series parts list WATER SLINGER INTERSTAGE BEARING CAP 204 – 206 LABYRINTH RING AIR VENT 20 – DOWEL PIN GEAREDUCER CASE COVER 5 – INTERSTAGE BEARING FAN SHAFT RETAINER 101 – SPIRAL BEVEL RING GEAR INTERSTAGE SHAFT INSPECTION COVER 101 –...
- Page 7 3400 Series parts list Complete Geareducer Assembly. 100 Spiral Bevel Gear Set. 400 Pinion Shaft Bearing Set 101 Set of matched spiral bevel gears including 401 Tail, tapered roller bearing integral pinion shaft with key. 402 Head, tapered roller bearing Gear ratios as follows: 2.76 to 1 2.375 to 1 2.476 to 1...
- Page 8 34.4 Series parts list WATER SLINGER INTERSTAGE BEARING CAP 204 – 206 LABYRINTH RING AIR VENT 20 – DOWEL PIN GEAREDUCER CASE COVER 5 – INTERSTAGE BEARING FAN SHAFT RETAINER 101 – SPIRAL BEVEL RING GEAR INTERSTAGE SHAFT INSPECTION COVER 101 –...
- Page 9 34.4 Series parts list Complete Geareducer Assembly. 400 Pinion Shaft Bearing Set 100 Spiral Bevel Gear Set. 401 Tail, tapered roller bearing 101 Set of matched spiral bevel gears including 402 Head, tapered roller bearing integral pinion shaft with key. Gear ratios as follows: 410 Interstage Bearing Set 2.76 to 1...
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Page 10: Field Repair
These parts are marked with an asterisk (*) in the description below. O-rings, oil seal and gaskets should be carefully inspected for damage before being reinstalled. SPX recommends that new O-rings and oil seal be installed during every major overhaul. - Page 11 field repair Figure 6 Model 34.4. Disassembly of Major Subassemblies...
- Page 12 field repair Figure 7 Disassembly of Pinion Cage Disassembly of Pinion Cage Part numbers and references—refer to Figures 3, 4 and 7. Remove pinion cage cap. Model 3400–Remove rotating portion of oil seal (701). Remove locknuts (103) and washer (104) from pinion shaft.
- Page 13 field repair Disassembly of Fan Shaft Part numbers and references—refer to Figures 3, 4 and 9. Press helical ring gear (201), lower fan shaft spacer (40) and lower cone (421) from shaft. Remove key spacer ring. Remove upper bearing cone (422)and water slinger spacer (703).
- Page 14 field repair Figure 11 Pinion Cage Assembly Interstage Assembly Part numbers and references—refer to Figures 3, 4 and 12. Install thin spiral bevel ring gear spacer (109) against top of helical pinion. Install key (106) and spiral bevel ring gear (101) on interstage shaft.
- Page 15 field repair Lower fan shaft and interstage shaft subassemblies into case simultaneously. Engage marked spiral bevel ring gear teeth with marked spiral bevel pinion tooth. The gear and pinion are match-marked when lapped and must be assembled the same way. The ring gear has the end of two teeth marked “X”...
- Page 16 field repair the prescribed preload of .001" to .003" (.025–.076mm) remove an amount of shims from between the case and labyrinth ring equal to the measured end play plus .001" to .003". For example if the measured end play is .005" (.127mm), remove a total of .006 to .008"...
- Page 17 field repair Apply a coat of Permatex® Form-a-Gasket No. 2 to surface of Geareducer case which mates with case cover. Lower case cover subassembly onto case, piloting both shaft subassemblies into their respective bores. Install taper pins (20) to align bearing bores. Fasten case cover to case with cap screws tightening to 45 ft·lbƒ...
- Page 18 field repair e–The difference in dial indicator readings (steps c and d) is Gear Setting Procedure the initial fan shaft bearing end play. In order to achieve the Part numbers and references—refer to Figures 3, 4 and 16. prescribed preload of .001 to .002" (.025–.051mm) remove The proper mounting of the gear set is essential to obtain long an amount of shims from between the case and bottom cap life and smooth operation of the gears.
- Page 19 field repair CORRECT PINION AND RING GEAR TOOTH CONTACT PATTERNS INCORRECT RING GEAR TOOTH CONTACT PATTERNS OUT OF POSITION CONTACT CAUSE: PINION TOO CLOSE TO GEAR CENTER. ORIGINAL REMEDY: MOVE PINION OUT. PATTERN AFTER CONCAVE SIDE CONVEX SIDE BREAK IN OUT OF POSITION CONTACT CAUSE: PINION TOO FAR FROM...
- Page 20 7401 WEST 129 STREET Z0504563_A (01-1162B) ISSUED 06/2017 OVERLAND PARK, KS 66213 USA COPYRIGHT © 2017 SPX CORPORATION In the interest of technological progress, all products are subject to design 913 664 7400 | spxcooling@spx.com and/or material change without notice.
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