Splitting - GBA10 gearbox / Centre housing Reassembly 64. Clean the mating surfaces of the gearbox and the centre housing. 65. Check the presence of locating pins (4) on the gearbox (Fig. 10). Remark The pins are “force” fitted. 66. Check that the studs (2) are in good condition (Fig. 10) and are correctly fitted to the centre housing. 67. Check the presence and correct positioning of the PTO shaft in the gearbox. 68. Smear the spring (1) with miscible grease and fit it on the shaft collar (2) (Fig. 12). 69. Smear the mating face of the centre housing with Loctite 5206 or its equivalent (Fig. 10). 70. Screw two diametrically opposed guide studs into the centre housing. 71. Check: • Version with no creeper unit - The presence of the locking ring (1) on the drive pinion (Fig. 13). - The correct positioning of the sleeve (2) on the drive pinion (Fig. 13) • Version with creeper unit - The presence of locking rings (1) on the drive pinion and the gearbox output shaft (Fig. 14). - The correct operation of the control mechanism (fork, selector rail and coupler) in each position. 72. Couple the centre housing to the gearbox. Reminder If there is resistance when moving the elements (gearbox, centre housing) together, do not force them, and find the cause of the problem.
Fig. 12
Fig. 13
02C02.14
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Massey Ferguson 6400 - Issue 1