Valtra 115 - Page 31

27
Model Code Page
21. Engine
1. 11. 2000
95--115
X100--X120
210 5
Pinboreinpiston 40,003...40,009 mm................................................................
Piston pin diameter 39,991...40,000 mm..............................................................
Width of ring grooves:
--- 1st groove tapered groove
--- 2nd grov e 2,520...2,540 mm....................................................................
--- 3rd g r o o v e 4,040...4,060 mm....................................................................
Side clearance of piston rings in their grooves:
--- 1st r i n g , tapered
--- 2nd ring 0,03...0,062 mm......................................................................
--- 3rd r i n g 0,05...0,082 mm......................................................................
--- rej e ct l i m i t 0,15 mm....................................................................
Pisto n ring height (in direction of cylinder):
--- 1st ring tapered
--- 2nd ring 2,478...2,490 mm......................................................................
--- 3rd r i n g 3,975...3,990 mm......................................................................
Piston ring gap (with piston fitted in cylinder)
--- 1st r i n g 0,40...0,55 mm.......................................................................
--- 2nd ring 0,60...0,80 mm......................................................................
--- 3rd r i n g 0,30...0,60......................................................................
--- rej e ct l i m i t 1,0 mm....................................................................
Max. permissible weight difference between pistons in same engine 25 g.....................
Piston to be heated up to 100˚C before fitting gudgeon pin.
Piston position in cylinder: combustion chamber of piston to face towards injector.
Connecting rod
Inside diameter of piston pin bush (with bush pressed into connecting rod) 40,025...40,040 mm...............
Outside diameter of piston pin bush 44,082...44,120 mm................................................
Interference fit: connecting rod small end bushing---connecting rod 0,057...0,120 mm......................
Connecting rod small end bore 44,000...44,025....................................................
Connecting rod big end bore 71,730...71,749 mm......................................................
Bigendbearingshellthickness:
--- standard 1,835...1,842 mm.....................................................................
--- 1st undersize 0,25 mm 1,960...1,967 mm.........................................................
--- 2nd undersize 0,50 mm 2,085...2,092 mm.........................................................
--- 3rd undersize 1,00 mm 2,335...2,342 mm.........................................................
--- 4th undersize 1,50 mm 2,585...2,592 mm.........................................................
Big---end bearing clearance 0,046...0,098 mm.......................................................
End float (side clearance) at big---end on crankshaft 0,200...0,410 mm...................................
Piston pin bushing location perpendicular to longitudinal axis of connecting
rod to be within 0,15:100..................................................................
Piston pin bushing locat i on and big---end bearing location to be parallel to within 0,05:100..........
W eight marking (letter) at lower end.
Max. permissible weight difference between connecting rods in the same engine 20 g..........
Positi on of connecting rod; order no at valve mechanism side
(away from the combustio n chamber in the piston)
Crankshaft
Crankpin diameter:
--- standard 67,981...68,000 mm.....................................................................
--- 1. undersize 0,25 mm 67,731...67,750 mm..........................................................
--- 2. undersize 0,50 mm 67,481...67,500 mm..........................................................