20 POWER STEERING IX Assembly of the steering unit and functional testing Before assembly, all traces of paint and damages must be removed from the face surfaces of the housing and cover. In addition, all parts must be thoroughly cleaned, lightly oiled and all sealing parts must be renewed.The measuring and adjusting tools used must be regularly checked for accuracy. A) Pre-assembly of housing 1. Clamp the housing in the Assembly Vice ToolNo 3. 2. The rollers are fitted with grease and a polyamide filler piece in the roller gap; this provides protection when the parts are stored and remains in the steering unit). Inser t the sector shaft; this is impor tant for installing the seal rings (6.1 and 6). Remove the sector shaft. 3. Place one round seal ring (6.1) and one seal ring (6) in each of the two radial grooves of the housing neck. Special care must be taken to ensure that the polyamide rings with the beveled surface lie on the same inclined surface of the groove. VIII Technical Data. SR.NO DESCRIPTION VALUES 1 FRICTION MOVEMENT OUT-SIDE “SAP”, MEASURED 40-60 NCM AT INPUT SHAFT OF STG. GEAR BOX 2 FRICTION MOVEMENT AT “SAP”, MEASURED AT ADD 70-150 NCM INPUT SHAFT OF STG. GEAR BOX HIGHER TO 1. 3 HEX. BOLTS(132)/COVER(128) M10 = 62NM M12X1.5 =115 NM M14X1.5 =190 NM 4 HEX. BOLTS(46)/COVER(40) M10 = 62NM M12X1.5 =115 NM M14X1.5 =190 NM M16X1.5 =285 NM 5 SEALING-NUT(50) 70 NM
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