Specific Components; Nuts And Bolts; Plastic Or Rubber Components; Flat Gaskets - Johnson Pump TG GS2-25 Instruction Manual

3.21.3 Specific components

3.21.3.1 Nuts and bolts

Nuts and bolts showing damage or parts with defective threading must be removed and replaced
with parts belonging to the same fixation class as soon as possible.
• Preferably use a torque wrench for tightening.
• For the tightening torques, see table below.
Bolt
M6
M8
M10
M12
M16
M20
M24
M30

3.21.3.2 Plastic or rubber components

• Do not expose components made of rubber or plastic (cables, hoses, seals) to the effects of oils,
solvents, cleaning agents or other chemicals unless they are suitable.
• These components must be replaced if they show signs of expansion, shrinkage, hardening or
other damage.

3.21.3.3 Flat gaskets

• Never re-use flat gaskets.
• Always replace the flat gaskets and elastic rings under the plugs with genuine spares from
SPX.

3.21.3.4 Filter or suction strainer

Any filters or suction strainers at the bottom of the suction line must be cleaned regularly.
Note! A clogged filter in the suction piping may result in insufficient suction pressure at the inlet.
Clogged filter in the discharge line may result in higher discharge pressure.

3.21.3.5 Anti-friction bearings

TG GS2-25, TG GS3-32 and TG GS6-40 pumps are equipped with 2RS ball bearings which are
grease packed for life. They do not require periodically greasing.
Starting with pump size TG GS15-50, the pumps are equipped with ball bearings which could be
greased periodically through a grease nipple at the bearing cover.
Recommended greases (Also consult supplier!)
Supplier
BP
Chevron
Esso
BEACON
Fina
Gulf
* Lubricants recommended by SPX.
A.0500.501 – IM-TGGS/05.01 EN (03/2013)
Plug with
Ma (Nm)
edge and flat Ma (Nm)
8.8 / A4
seal
10 G 1/4
25 G 1/2
51 G 3/4
87 G 1 140
215 G 1 1/4 250
430
740
1500
NLGI-2 NLGI-3
LS2 LS3
Polyurea EP grease-2
BEACON 2 * BEACON 3
EP2 (*) UNIREX N3 *
LICAL EP2 CERAN HV
MARSON L2
Crown Grease No.2 Crown Grease No.3
20
50
80
Plug with edge and elastic washer
Supplier
Mobil
SKF
Shell
Texaco
Total
NLGI-2 NLGI-3
Mobilux EP2
LGMT2 LGMT3
LGHQ3 (*)
ALVANIA R2 ALVANIA R3
DARINA GREASE R2
Multifak EP-2
MULTIS EP-22
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