Tennant 550, Manual

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APPENDIX
550E MM149 (12--96)
4-2
HARDWARE INFORMATION
The following charts state standard plated
hardware tightening ranges for normal assembly
applications. Decrease the specified torque by
20% when using a thread lubricant. Do not
substitute lower grade hardware for higher grade
hardware. If higher grade hardware than specified
is substituted, tighten only to the specified
hardware torque value to avoid damaging the
threads of the part being threaded into, as when
threading into speed nuts or weldments.
STANDARD BOLT TORQUE CHART
Thread SAE Grade 5 SAE Grade 8
Size Torque ft lb (Nm) Torque ft lb (Nm)
0.25 in 7--10 (9--14) 10--13 (14--38)
0.31 in 15--20 (20--27) 20--26 (27--35)
0.38 in 27--35 (37--47) 36--47 (49--64)
0.44 in 43--56 (58--76) 53--76 (72--103)
0.50 in 65--85 (88--115) 89--116 (121--157)
0.62 in 130--170 (176--231) 117--265 (159--359)
0.75 in 215--280 (291--380) 313--407 (424--552)
1.00 in 500--650 (678--881) 757--984 (1026--1334)
NOTE: Decrease torque by 20% when using a
thread lubricant.
METRIC BOLT TORQUE CHART
Thread Class 8.8 Class 10.9
Size Torque ft lb (Nm) Torque ft lb (Nm)
M4 2 (3) 3 (4)
M5 4 (5) 6 (8)
M6 7 (9) 10 (14)
M8 18 (24) 25 (34)
M10 32 (43) 47 (64)
M12 58 (79) 83 (112)
M14 94 (127) 133 (180)
M16 144 (195) 196 (265)
M20 260 (352) 336 (455)
M24 470 (637) 664 (900)
NOTE: Decrease torque by 20% when using a
thread lubricant.
Exceptions to the above chart:
Main brush drive plug nut -- 30 ft lb (40 Nm)
then tighten to next slot.
Brake unit to hub sockethead screw --
9 to 12 ft lb (12 to 16 Nm) with Locktite 242
blue.
Front wheel nut -- 10 to 12 ft lb (14 to 16
Nm) while turning wheel, tighten to spec,
then backoff, retighten by hand till snug,
then turn to next slot.
Damper solenoid nut -- 20 to 23 in lb
(2.5 to 3 Nm).
Pitman arm to steering column nut -- 160 ft
lb (215 Nm).
Propelling motor shaft thin nylon lock nut --
7 to 10 ft lb (9 to 14 Nm).
Propelling motor adapter bolts -- 16 to 21 ft
lb (21 to 28 Nm) with Locktite 242 blue on
threads. Use locktite 515 sealant on the pilot
fillet of the motor and the adapter.
BOLT IDENTIFICATION
Identification Specification
Grade Marking and Grade
SAE--Grade 5
SAE--Grade 8
ISO--Grade 8.8
ISO--Grade 10.9
01395
THREAD SEALANT AND LOCKING
COMPOUNDS
Thread sealants and locking compounds may be
used on this machine. They include the following:
Locktite 515 sealant -- gasket forming
material. TENNANT Part No. 75567,15 oz
(440 ml) cartridge.
Locktite 242 blue -- medium strength thread
locking compound. TENNANT Part No.
32676, 0.5 ml tube.
Locktite 271 red -- high strength thread
locking compound. TENNANT Part No.
19857, 0.5 ml tube.