SPX Cooling Technologies TG MAG15-50 4.3.2Pre-assemblyof the back-pull-out, circulation pump

4.3.2Pre-assembly of the back-pull-out

4.3.2.1 Adjustment of the axial clearance of the	8480
circulation pump

1.Place pump insert (8430) and radial bearing holder (8350-C) in the intermediate cover (8450). Do not use any shim (8470) at this stage.

Remark: There are two different inserts according to		8350-C
the sense of rotation of the pump shaft (see sketch).
R	L	8450
		8470

2. Fit cap head screws (8480) and tighten them cross- wise to fix the radial bearing holder (8350-C) and insert (8430) to the intermediate cover (8450).

8430

			8430
3. Mount axial bearing (8350-A) into the insert (8430).			8350-A
	Do not use any force and be careful not to damage
	the bearing faces while pushing part (8350-A) in until
	the bearing faces are making contact.
4. Measure the distance between front face of the axial
	bearing holder (8350-A)(front face gear tooth) and
	the front face of the crescent of the pump insert
(8430).
5. Calculate the required thickness of the bearing				X
	shim (8470): S = X – C.
	Axial clearance C see table below.
	TG MAG	Axial clearance C
		[mm]
	15-50	0.120 – 0.200
	23-65	0.125 – 0.215
	58-80	0.150 – 0.250
	86-100	0.165 – 0.275
	185-125	0.190 – 0.320

8450 8350-C

8480

56 A.0500.551 – IM-TGMAG/02.00 EN (02/2008)