Assembly Of The Stationary Seat; Pumps; General; Tg Gs2-25/Tg Gs3-32/Tg Gs6-40 - Johnson Pump TG GS2-25 Instruction Manual

4.6.6

Assembly of the stationary seat

• Fit the stationary seat(s) into the casing.
• Use appropriate tools to push the seat perpendiculaly in its housing.
• Protect the seat face with a piece of paper or hardboard and lubricate the rubber sealing
elements with a lubricant. This will facilitate the assembly.
Attention! Do not use mineral oil for EP rubber.
• Check the perpendicularity of the seat face to the shaft rotating axis afte assembling.
4.7

Pumps

4.7.1

General

Note! To avoid damaging of carbon or ceramic shaft sealing parts the rotor with shaft must
remain centered in the pump casing. Therefore the pump cover (4000) and the idler (0600) should
be removed and the shaft be pushed to the front instead of disconnecting and removing the
intermediate part (0020) during the disassembly of the second ball bearing (2250).
• Always replace damaged parts with original parts.
• At every disassembly new graphite gaskets must be used. Never re-use gaskets.
4.7.2

TG GS2-25/TG GS3-32/TG GS6-40

Disassembly
1. Remove ball bearing (1440) and bearing bracket (1400) as described in bearing disassembly,
section 4.5.2.
2. Remove pump cover (4000) and idler (0600).
3. Remove outer circlips (2230) from the shaft.
4. Push the shaft with rotor (0700) to the front using the appropriate pusher or extractor.
5. When the bearing is released from this press fit, move the shaft backwards again so that the ball
bearing (2250) comes free.
Extract now the bearing over the other press fit at ball bearing (1440) location using the
appropriate extractor and remove it.
6. Remove outer circlips or support ring (2240)
from the shaft.
7. Detach intermediate casing (0020)
by loosening the screws (1200)
and remove it.
Assembly
1. First assemble seal (3010), see sections 4.6.5 and 4.6.6.
Fit the intermediate casing (0020) and tighten bolts (1200).
2. Locate the circlips or support ring (2240) on the shaft.
3. Fix the ball bearing (2250) on the shaft against the circlips or support ring (2240).
4. Push on the inner ring of the ball bearing.
5. Fix the circlip (2230) that spanns on the shaft and push it against the ball bearing.
A.0500.501 – IM-TGGS/05.01 EN (03/2013)
2210
1410
2240 2250
3010
0020
1460
1200 1400 1500
2230
1480
1440
1430
1570
1450
1460
1540
1510
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