Grand Design Reflection Fifth Wheel 150 Series, Owner'S Manual

Page: 70 / 220

Pre-Travel Information
64
Wheel Nut Torque
• The lug nuts on your RV wheels require
frequent torque maintenance.
• Torque is the amount of rotating force applied
to a fastener, such as a lug nut.
Your RV’s axle and wheel assemblies are designed differently
than those of a car. The RV’s overall size, weight, and center of
gravity subject the wheels to pressures unique to trailering.
During normal cornering, the tires and wheels experience a
considerable amount of stress called Side-Load .
• ALWAYS use a properly calibrated torque wrench
to confirm proper torque.
• ALWAYS check lug nut torque on each wheel before
departure, regardless of how short the trip may be.
•
DO NOT
allow
UNDER
-torque or
OVER
-torque on any
wheel.
• Tighten the lugs in the correct order for your RV’s lug
pattern shown in the diagram. ( Left )
Find your RV’s wheel size on the table ( Below ). Tightening the
lugs should be done in three stages. Determine the correct
torque for each stage, and use the torque sequence shown.
Wheel
Size
Stud
Size
Torque Sequence
1st Stage 2nd Stage 3rd Stage
14" 1/2"
20-25 50-60 90-120
15" 1/2"
20-25 50-60 90-120
16" 1/2" 20-25 50-60 90-120
16.5" x 6.75" 1/2" 20-25 50-60 90-120
16" 9/16" 20-25 60-70 120-130
16.5" x 6.75" 9/16" 20-25 60-70 120-130
17.5"
w/ long nut
5/8"
50-60 100-120 190-210
17.5"
w/ flange nut
5/8"
50-60 150-200 275-325
14.5" Demount 1/2" Tighten sequentially to 85-95
* NOTE: All torque in ft.-lbs.
Always torque the wheel
nuts to the specifications
of the wheel manufacturer.
Over or under-torqued
wheel nuts can cause the
wheel to separate from the
wheel mounting surface
during operation, causing
property damage, personal
injury or loss of life.
WARNING
2
3
4
5 6
7
8
1
5
6
2
3
4
1
5 4
2
3
1
6 - Lug Pattern
5 - Lug Pattern
8 - Lug Pattern