Changing Piston Rings - Valtra 6000 Workshop Manual

21. Engine
The letters show the weight classes as follows:
Weight Part no
A 2170---2189 g 8366 52104
B 2190---2209 g
8366 52105
C 2210---2229 g 8366 52106
D 2230---2249 g
8366 52107
E 2250---2269 g 8366 52108
H 2270---2289 g 8366 52109
I 2290---2309 g 8366 52110
J 2310---2329 g 8366 52111
K 2330---2349 g
8366 52112
L 2350---2369 g 8366 52113
M 2370---2389 g 8366 52114
N 2390---2409 g 8366 52115
O 2410---2429 g 8366 52116
P 2430---2449 g 8366 52117
R 2450---2469 g
8366 52118
S 2470---2489 g 8366 52119
T 2490---2509 g
8366 52120
U 2510---2529 g 8366 52121
E. Changing piston rings
1. Remove the piston rings with piston ring pliers. Do not open
the rings more than necessary. If the rings are to be used
again ensure that they are fitted in the same groove.
2. Clean the piston ring groove and measure the piston ring
clearance, which must not exceed 0,15 mm. Determine
whether too large a clearance is due to worn rings or a worn
groove. Change worn parts.
Model
15. 5. 1996
1. 4. 1997
3. Measure the piston ring gap by pushing one piston ring at
a time into the cylinder bore. The piston ring gap must not
exceed 1 mm on 1. and 3. piston rings and 1,5 mm on 2. pis-
ton ring.
4. Fit the piston rings on the piston using the piston ring pliers.
Ensure that the rings are fitted in the correct groove and that
"TOP", or the manufacturer's designation, faces upwards.
Note! The uppermost ring is square on tractors 6000, 6200,
6300, 8000R, 8000, 8100, 8050 and 8150. The uppermost ring
is wedge ---shaped on tractors 6100, 6400, 6600, 6800, 8200,
8400, 8450, 8550, 8750.
61
Code Page
6000-- 8750
213 5