UNDERCARRIAGE / Upper And Lower Roller 4. Loosen bolts (6) (4 used) on upper roller (4). : 27 mm CAUTION: Upper roller (4) weight: 35 kg (77 lb) 5. Remove upper roller (4) from track frame (5). Installation W1V7-03-06-001 4 W105-03-06-005 5 CAUTION: Upper roller (4) weight: 35 kg (77 lb) 1. Install upper roller (4) to track frame (5) with bolts (6) (4 used). : 460 N m (46 kgf m, 340 lbf ft) 2. Remove the wooden blocks and oil jack between track (3) and track frame (5). : 27 mm W1V7-03-06-001 3 5 Wooden Block W105-03-06-003 W3-6-2 6 4 6 4 5