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10 

field repair

8.  Measure fan shaft end play with a dial indicator on a surface 

normal to the plane of rotation.  Lift shaft axially and rotate slowly 
until all axial movement stops.  Zero the dial indicator.  Lower 
shaft (zero lifting load) and rotate shaft until axial movement 
stops.  End play will be read directly from the dial indicator.  
Adjust the fan shaft bearings to .003 -.005" (.076 -.127mm) 
end play. The end play is adjusted by adding or removing shims 
(

420

) under the bearing retainer. 

Installation of Pinion Cage

1.  Find the difference between the pinion setting distance of 

the old gear and the new pinion gear and adjust the old shim 
pack (320) or make a new shim pack to compensate for the 
different setting distances. 

 Example:
 

Pinion setting distance of old gear 

6.505"

 

Pinion setting distance of new gear 

6.500"

 

 

 

 

    Difference 

  .005"

 

Remove .005 from shim pack.

2.  Install pinion cage subassembly into case and tighten cap 

screws to 102 N·m.

3.  Engage pinion gear tooth with “X” marked on end between ring 

gear teeth marked with “Xs”. Care must be taken not to damage 
the pinion gear teeth by forcing them into the ring gear teeth. 

GEAR SETTING PROCEDURE

The proper mounting of the gear set is essential to obtain long life 
and smooth operation of the gears. The pinion and ring gears were 
positioned approximately in the preceding steps. The correct gear 
position is determined by the gear backlash. 
1.  Based on the backlash etched on the gear set, find the equivalent 

backlash setting in 

Table 2

, Column 2.

2.  With the “X” marked tooth on the pinion gear engaged be-

tween the two “X” marked teeth on the ring gear, check the 
backlash with a dial indicator as shown in 

Figure 5

. Lock the 

pinion shaft against rotation. The amount of movement of the 
fan shaft, measured at a distance equal to the outside radius 
of the ring gear is the backlash.  Obtain backlash setting by 
adjusting ring gear axially by removing or adding shims (

420

at bottom bearing cap.

Note

—To maintain the previous fan shaft bearing endplay adjust-

ment, a corresponding shim (

420

) adjustment must be made at the 

bearing retainer.

Example:

 Removing .003 shims at the bottom bearing cap requires 

the addition of .003 shims at the bearing retainer to maintain correct 
bearing adjustment. 
Recheck the backlash to make sure it is within the proper limits. 
3.  After the equivalent backlash setting has been obtained with the 

marked teeth in mesh, check the backlash at two other points 
on the ring gear (points approximately 120° apart).  See 

Table 

2

, Column 3 for tolerances.

FINAL ASSEMBLY

1.  Remove bottom cap and apply a bead of sealant to the bot-

tom cap flange inboard of the bolt holes. Reinstall the bottom 
bearing cap and tighten the cap screws to 75 ft·lbƒ (102 N·m).

2.  Install O-ring (

502

) in water slinger. 

3.  Install water slinger on fan shaft (

201

). 

4.  Replace air vent and all pipe plugs.
5.  Fill with lubricant selected from 

Table 1

COLLAR 

SET SCREW 

TOP VIEW

OF INDICATOR
POINT OF MEASUREMENT

OUTSIDE RADIUS OF GEAR
DIAL INDICATOR

Figure 5 – Gear Backlash Measurement

Содержание 2700-3000 Series

Страница 1: ...2700 3000 Series Geareducer INSTALLATION OPERATION MAINTENANCE user manual uk_Z0529732_A ISSUED 06 2017 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT ...

Страница 2: ...ng alignment x Inspect and tighten driveshaft or coupling fasteners x Check driveshaft or coupling bushing flex elements for unusual wear x Lube Lines if equipped Check for oil leaks in hoses and fittings x R x R Refer to instructions within this manual Note It is recommended at least weekly that the general operation and condition be observed Pay particular attention to any changes in sound or vi...

Страница 3: ...s Geareducers supplied with new towers include oil for the initial fill ing Oil is not furnished with Geareducers supplied as spares or on replacement orders Before operating the mechanical equipment check to be sure the oil level is at the full mark at the Geareducer and that the external gauge placard if equipped full mark corre sponds with the Full level in the Geareducer Check any oil lines to...

Страница 4: ...k mechanical equipment anchor bolts drive shaft coupling bolts and coupling set screws Tighten as required Check Geareducer exterior yearly and touch up with epoxy paint if required Coat all exposed threads at pipe joints to prevent corrosion Every 5 Years If using Marley synthetic Gearlube change oil To maintain five year change intervals use only Marley Gearlube It is recommended to monitor the ...

Страница 5: ...to a pump to the three way valve operation and service Pump oil through the hose Check oil level occasionally by turning the valve control stem counterclockwise and allowing the oil level in the sight glass to stabilize Continue filling until full level mark is reached 3 With the oil level at the full mark turn the valve control stem counterclockwise to close the drain and open the valve to the si...

Страница 6: ...list 210 502 BEARING RETAINER 203 202 101 301 420 104 105 103 311 503 312 501 PINION CAGE PINION CAGE CAP 320 DOWEL PIN 420 412 201 102 101 008 VENT WATER SLINGER GEAREDUCER CASE 204 411 BOTTOM CAP CASE COVER DOWEL PIN ...

Страница 7: ...4 Tongue Washer 105 Lockwasher 200 Fan Shaft Set 201 Fan Shaft 202 Ring gear hub key 203 Fan key 204 Ring spacer Model 2700 Geareducer only 210 Fan attaching hardware Cap screws and washers 301 Oil Slinger 310 Set of Two Pinion Shaft Bearings 311 Head tapered roller bearing 312 Tail tapered roller bearing 320 Pinion Cage Shims 410 Fan Shaft Bearing Set 411 Lower tapered roller bearing 412 Upper ta...

Страница 8: ... ring of bolts in pinion cage and remove pinion subassembly Note The thickness of the shim pack 320 is important in resetting thegears Theshimpackshouldeitherbesavedorcarefullymeasured with a micrometer If the gears are to be replaced record the pinion setting distance that is etched on the pinion gear See Figure 4 3 Remove water slinger 4 Remove bearing retainer and shim pack 420 from top of case...

Страница 9: ...pinion shaft making sure oil slinger and bearing are against gear 3 Press bearing cups 311 and 312 into pinion cage 4 Lower pinion cage on pinion shaft until head bearing cone and cup mate 5 Press tail bearing cone 312 on pinion shaft until it mates with its bearing cup 6 Install locknut lockwasher and tongue washer 103 105 and 104 Tighten nuts on bearing cone until 8 to 12 in lbƒ 904 1356 mN m of...

Страница 10: ...nthebacklashetchedonthegearset findtheequivalent backlash setting in Table 2 Column 2 2 With the X marked tooth on the pinion gear engaged be tween the two X marked teeth on the ring gear check the backlash with a dial indicator as shown in Figure 5 Lock the pinion shaft against rotation The amount of movement of the fan shaft measured at a distance equal to the outside radius of the ring gear is ...

Страница 11: ...11 field repair Table 2 Backlash Etched on Gears Set the Gears to Backlash 008 010 003 008 009 0115 003 008 010 013 003 008 011 014 004 010 012 015 004 010 013 017 004 010 014 0185 004 010 ...

Страница 12: ...ION In the interest of technological progress all products are subject to design and or material change without notice SPX COOLING TECHNOLOGIES UK LTD 3 KNIGHTSBRIDGE PARK WORCESTER WR4 9FA UK 44 1905 750 270 ct fap emea spx com spxcooling com Geareducer US E R MAN UAL ...

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