Table 1. Time Standard-Continued
Removal and replacement
Man-hours
76 CONVEYING-Continued.
7520 Crusher Frames-Continued.
55.4
Frames,
crusher
----------------------------------------------------------------------------------------
(Includes removal and installation of crusher assembly, spring,
hopper, chute, rolls and shaft.)
5.5
Hopper --------------------------------------------------------------------------------------------------
(Includes removal and installation of chute and catwalk.)
1.5
Chute -----------------------------------------------------------------------------------------------------
7522 Rolls
55.4
Rolis, crusher ------------------------------------------------------------------------------------------
(Includes removal and installation of crusher assembly, spring,
hopper, chute, rolls and shaft.)
0.5
Springs ---------------------------------------------------------------------------------------------------
7523 Shafts
55.4
Shafts; gears; bearings and seals ---------------------------------------------------------------------
(lncludes removal and installation of rolls:)
7525 Screening Base, Box
15.0
Screen assembly, vibrating ------------------------------------------------------------------------
(Includes removal and installation of conveyor head and center
section, catwalks and electric motors.)
10.7
Box;
plates
----------------------------------------------------------------------------------------------
(Includes removal and installation of conveyor head and center
section.)
0.5
Rubber, mounting; chute; gate -------------------------------------------------------------------
15.7
Rail, center and crossmember, feed --------------------------------------------------------------
(Includes removal and installation of box and screens.)
0.7
Underhopper; chute; gate ---------------------------------------------------------------------------
7528 Screens and Attaching Parts
3.0
Screens --------------------------------------------------------------------------------------------------
(Includes removal of access plate and mufller-lower screen.)
7529 Eccentric or Gyrator Shaft
5.6
Shaft assembly ----------------------------------------------------------------------------------------
(Includes removal and installation of balance wheel, guard and
bearings.)
5.6
Bearings --------------------------------------------------------------------------------------------------
(Includes removal and installation of balance wheel, guard and
shaft)
0.3
Balance
wheel
------------------------------------------------------------------------------------------
0.3
Guard ----------------------------------------------------------------------------------------------------
76 FIRE FIGHTING EQUIPMENT
7603 Fire Extinguishers
0.3
Extinguisher,
fire
---------------------------------------------------------------------------------------
tolerances, clearances, and the maximum allow-
m . E n g i n e Repair a n d R e p l a c e m e n t S t a n d -
a b l e wear and clearances for the roll crusher.
a r d s . Table 2 lists the manufacturer's sizes,
Table 2. Engine Repair and Replacement Standards
Manufacturer's
dimensions and
M i n i m u m Maximum
tolerances in
Desired
clearance
clearance
wear
inches
Minimum
Maximum
Maximum
Minimum
Valve Guide:
Length:
4.718
Intake ------------------------------------
--------
3.812
Exhaust ----------------------------------
---------
AGO 8498A
14
