Generac Power Systems TXP User Manual
Page 6
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TORQUE VALUES
STANDARD TORQUE VALUES
All Values in FOOT-POUNDS
TORQUE VALUES + 5 PER CENT
Grade 2
Grad
----------
Grade 7
Grade 8
BOLT SIZE
DRY
LUB
DRY
LUB
DRY
LUB
DRY ■ LUB
1/4-20
5
4
8
6
10
8
12
9
1/4-28
6
5
10
7
12
9
14
11
5/16-18
11
8
17
13
21
16
24
18
5/16-24
13
10
19
15
24
18
27
21
3/8-16
20
15-
31
24
38
29
44
34
3/8-24
23
17
35
27
43
33
49
38
7/16-14
32
25
49
38
61
47
70
54
7/16-20
36
27
55
42
68
52
78
60
1/2-13
49
38
75
58
93 -
72
105
82
1/2-20
55
42
85
65
105
■ 80
120
90
9/16-12
70
54
110
84
135
105
155
120
9/16-18
78
60
120
93
150
115
170
132
5/8-11
92
71
150
115
185
145
210
165
5/8-18
105
81
170
130
210
160
240
185
3/4-10
165
125
270
205
330
250
375
290
3/4-16
180
140
295
230
365
280
420
320
7/8-9
200
155
395
305
530
405
605
455
7/8-14
225
170
435
335
585
450
670
515
1-8
300
230
590
455
795
610
905
695
1-14^
340
260
680
510
GRADE
BOLT HEAD
SYMBOL
O
©
SPECIAL TORQUES
Connecting Rod.
.................. .......................................................••..190 In.-Lbs.
Cylinder Head (Torque in staggered.sequence)..........................................................160 In.-Lbs.
Spark Plug.:. .................. ................................................ 200 In. -Lbs.
Starter Motor Mounting Bolts..,i.............................................. .........................................160 In.-Lbs.
Engine Base.................................................................................................. ...................300 In.-Lbs.
Sump (7 bolts).................................. .(......I-............................................. 160 In.-Lbs.
Crankcase Cover (7 bolts)................................... ..................................................140 In.-Lbs.
Governor Lever Lock Nut...,............................................................................................ 100 In.-Lbs.
Fan to Engine Shaft Capscrew (Grade 5)-(Apply Loc^Tite
601 to capscrew threads:).................. ........................ ......................................... .. 19 Ft.-Lbs.
Flex Coupling to Rotor Hub Capscrews (Model 6931-2) -
(Apply LocTite 601 to capscrew, threads)................................................................. 19 Ft.-Lbs.
Flex Coupling to Fan Capscrews (Model 6931-2) - (Apply
LocTite 601 to capscrew threads)..................................................................................... 19 Ft.-Lbs.
Issued 6-78
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