
11.2.7 Check Tightness of Threaded Connections
The hydraulic hammer threaded connections are subjected to high stresses. All hydraulic
hammer threaded connections must be checked daily for the first 50 operating hours and
thereafter once a week. Loose connections shall be tightened to the specified torque.
Torques are given for lubricated fittings. Refer to the Torque Table below for applicable
connections. The required torque is given in Foot Pounds and Newton Meters in parenthe-
ses. Figure 11-3 on the following page shows the item numbers referenced in the table.
6-1-03
11-4
A
LLIED
Street Hammer
AS Series
Torque Table for Allied Street Hammers
Torque in Ft.lbs. (N-m)
Connection
Item
No,
Interval
Tool
Required
Tool Size
AS342
Torque
AS342
Tool Size
AS352
Torque
AS352
Tool Size
AS362
Torque
AS362
Cylinder Head
Bolts*
1 As
Req’d
Socket Wrench
13 mm
**11 (15)
+60
o
(1)
+30
o
(1/2)
17mm
**18 (25)
+30
o
(1/2)
+30
o
(1/2)
17mm
**18(25
+30
o
(1/2)
+30
o
(1/2)
Fill Valve G
2 Weekly Open-End Wrench
Socket Wrench
22mm
5mm
95(130)
15 (20)
22mm
5mm
95 (130)
15 (20)
22mm
5mm
95 (130)
15 (20))
Connections
P & T
3 Weekly Open-End Wrench
22 mm
44 (60)
26mm
66 (90)
26mm
66 (90)
Lube Fitting
5 As
Req’d
Open-End Wrench
14 mm
15 (20)
14 mm
15 (20)
14 mm
15 (20)
Hammer
Bracket
6 Weekly
Socket Wrench
15/16”
170 (231)
15/16” 170 (231)
1-1/2”
250 (339)
Connection
Item
No,
Interval
Tool
Required
Tool Size
AS370
Torque
AS370
Tool Size
AS380
Torque
AS380
Cylinder Head
Bolts*
1 As
Req’d
Socket Wrench
19 mm
**(57)
+30
o
(1/2)
+30
o
(1/2)
19mm
**45 (61)
+30
o
(1/2)
+30
o
(1/2)
Fill Valve G
2 Weekly Open-End Wrench
Socket Wrench
22 mm
5 mm
95(130
15 (20)
22mm
5mm
95 (130)
15 (20)
Connections
P & T
3 Weekly Open-End Wrench
26 mm
65 (90)
26mm
65 (90)
Lube Fitting
5 As
Req’d
Open-End Wrench
14 mm
15 (20)
14mm
15 (20)
Hammer
Bracket
6 Weekly
Socket Wrench
1-1/2”
250 (339)
1-1/2” 250 (339)
*The cylinder head bolts are only accessible when the hammer is removed from the box.
**See next page.
Содержание AS 342
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