Calibration Specification; Belt Tension Specification; Bolt Grade Identification - Precor Precision 400 Series Service Manual

System Component
Drive Motor bolts

Calibration Specification

System calibration specification:
System Component
Lift Motor Jackscrew Calibration Distance
1
Incline Level A/D Calibration
Belt Tension Specification
.Belt tension specification:
System Component
Drive Belt Tension
Running Belt: tension gauge dial reading (per-
cent %)
(1) Referenced to belt gauge set to 3.0 (0.0%)with no belt tension.

Bolt Grade Identification

Bolt grade markings are used to categorize bolts according to the bolt material, man-
ufacturing process, and mechanical properties. The grade of the bolt is stamped on the
head of the bolt.
US SAE bolts: The bolt grade markings are determined by the number of the lines stamped
on the head of the bolt. The number of lines is always two less than the grade of the bolt.
Count the lines, add two, and you can determine the grade of the bolt.
1
analog to digital converter
Contact Precor Customer Support at support@precor.com or 800.786.8404 with
any questions.
2 General Information
Bolt Grade Identification
Specification
180 in-lbs (15 ft-lbs, 20.4 N-m)
Specification
1 in (2.54 cm)
Incline angle A/D values:
Nominal value: 13 ±5 @ -2%
l
incline
Nominal value: 37 ±5 @0%
l
incline
Nominal value: 242 ±5 @ 15%
l
incline
Specification
70-90 lbs (32-41 kgs)
(1)
3.55 (0.55%)
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