Service Manual

Toro®- Z Master® 8000 Series Service Manual

September 2016

Table of Contents

SPECIFICATIONS

2-3

SPECIFICATIONS

2 - 4 TimeCutter

Z Service Manual

Torque Specifications

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 the service manual.

These torque specifications for the installation and

tightening of fasteners shall apply to all fasteners which

do not have a specific requirement identified in the

service manual. The following factors shall be

considered when applying torque: cleanliness of the

fastener, use of a thread sealant (Loctite), degree of

lubrication on the fastener, presence of a prevailing

torque feature, hardness of the surface underneath of

the fastener’s head, or similar condition which affects

the installation.

As noted in the following tables, torque values should

be reduced by 25% for lubricated fasteners to

achieve the similar stress as a dry fastener. Torque

values may also have to be reduced when the fastener

is threaded into 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 verifying torque shall be

performed by marking a line on the fastener (head or

nut) and mating part, then back off fastener 1/4 of a

turn. Measure the torque required to tighten the

fastener until the lines match up.

Fastener Identification

Figure 1

Figure 2

Inch Series Bolts and Screws

(A) Grade 1

(B) Grade 5

Metric Bolts and Screws

(A) Class 8.8 (B) Class 10.9