Toro Pro Force 44552, Service Manual

Page: 18 / 134

Torque Specifications
The recommended fastener torque values are listed in the following tables. For
critical applications, as determined by Toro, either the recommended torque or a
torque that is unique to the application is clearly identified and specified in this
Service Manual.
These torque specifications for the installation and tightening of the fasteners will
apply to all the fasteners which do not have a specific requirement identified in
this Service Manual. The following factors must be considered when applying
the torque: cleanliness of the fastener, use of a thread sealant (e.g., Loctite),
degree of lubrication on the fastener, presence of a prevailing torque feature
(e.g., Nylock nut), hardness of the surface underneath the head of the fastener,
or similar condition which affects the installation.
As noted in the following tables, the torque values should be reduced by 25%
for lubricated fasteners or fasteners with a wet thread locking compound
applied
to achieve the similar stress as a dry fastener. The torque values must
be reduced when the fastener is threaded into the aluminum or brass. The
specific torque value should be determined based on the aluminum or brass
material strength, fastener size, length of thread engagement, etc.
The standard method of checking the torque can be performed by marking a line
on the fastener (head or nut) and mating part, then back off the fastener 1/4
of a turn. Measure the torque necessary to tighten the fastener until the lines
match up.
Specifications and Maintenance: Torque Specifications Page 2–4 Pro Force® Debris Blower
18237SL Rev A