Hitachi EX20UR-2 Manual page 56

W02-03-23
W562-02-03-009
UPPERSTRUCTURE / Pump
Device
8. After installing cylinder block (10) in body S (1),
insert spring (13).
9. Install valve plate (33) in body S (1).
10. Install pin (2) into body H (29) and place pack-
ing (12) on body S (1).
11. Install joint (18) onto shaft (48).
12. Place body H (29) onto body S (1). Secure
body H (29) to body S (1) with two temporary
assembling bolts (M20x60 L).
13. Slightly tighten three socket bolts (30) with
spring washers (31).
14. Remove only one temporary assembling bolt
tightened in step 12 above, install socket bolt
(30) with spring washer (31) for the temporary
assembling bolt, and slightly tighten them. Then,
remove the remaining other temporary assem-
bling bolt, and install and slightly tighten socket
bolt (30) with spring washer (31) in the same
way.
15. Retighten to specification five bolts (30) which
were slightly tightened at step 13 and 14.
r m.
" : 6 mm
10-- 34 :
54 to 64 N•rn
( 5.5 to 6.5 kgf.rn, 40 to 47 lbf•ft )
16. Install adjusting bolt (17) into body H (29) to re-
set bolt (17) in the same dimension recorded
before removing. Tighten bolt (17) with lock nut
(16).
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