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A.0500.501 – IM-TGGS/05.01 EN (03/2013)
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
Ma (Nm)
8.8 / A4
Plug with
edge and flat
seal
Ma (Nm)
M6
10
G 1/4
20
M8
25
G 1/2
50
M10
51
G 3/4
80
M12
87
G 1
140
M16
215
G 1 1/4
250
M20
430
M24
740
M30
1500
Plug with edge and elastic washer
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.
Supplier
NLGI-2
NLGI-3
BP
LS2
LS3
Chevron
Polyurea EP grease-2
Esso
BEACON 2 *
BEACON 3
BEACON
EP2 (*)
UNIREX N3 *
Fina
LICAL EP2
CERAN HV
MARSON L2
Gulf
Crown Grease No.2
Crown Grease No.3
Recommended greases (Also consult supplier!)
Supplier
NLGI-2
NLGI-3
Mobil
Mobilux EP2
SKF
LGMT2
LGMT3
LGHQ3 (*)
Shell
ALVANIA R2
ALVANIA R3
DARINA GREASE R2
Texaco
Multifak EP-2
Total
MULTIS EP-22
* Lubricants recommended by SPX.